California Interagency Watershed Mapping Committee California Department of Forestry and Fire Protection Tierra Data Systems, California Department of Water Resources State Water Resources Control Board California Department of Fish and Game State of California Stephen P. Teale Data Center GIS Solutions Group 20041118 2.2.1 vector digital data State of California Department of Water Resources Memorandum of Understanding Regarding the Use and Maintenance of the California Watershed Map by the California Interagency Watershed Mapping Committee (CIWMC, 1998 - 2000). http://cain.nbii.gov/calwater/ http://gis.ca.gov/casil/gis.ca.gov/calwater California Resources Agency 2001 Online Digital Geospatial Data California Spatial Information Library 1.0 Sacramento, California State of California, California Resources Agency State of California repository for online Digital Geospatial Data. Initiated on July 1, 2001 following transfer of the Stephen P. Teale Data Center GIS Solutions Group GIS Library. http://www.gis.ca.gov CALWATER_04 The California Interagency Watershed Map of 1999 (updated May 2004, "calw221") is the State of California's working definition of watershed boundaries. Previous Calwater versions (1.2 and 2.2) described California watersheds, beginning with the division of the State's 101 million acres into ten Hydrologic Regions (HR). Each HR is progressively subdivided into six smaller, nested levels: the Hydrologic Unit (HU, major rivers), Hydrologic Area (HA, major tributaries), Hydrologic Sub-Area (HSA), Super Planning Watershed (SPWS), and Planning Watershed (PWS). At the Planning Watershed (the most detailed level), where implemented, polygons range in size from approximately 3,000 to 10,000 acres. At all levels, a total of 7035 polygons represent the State's watersheds. The present version, Calwater 2.2.1, refines the watershed coding structure and documentation (database fields were added and some were renamed). There are significant watershed boundary, code, and name differences between Calwater versions 1.2 (1995), 2.0 (1998), and 2.2 (1999). The differences between versions 2.2 (1999) and 2.2.1 (2004) are attribute field names and some inserted lines that identify differences between State and federal watersheds. Calwater 2.2.1 most accurately delineates true watersheds in mountainous terrain. However, neither Calwater 2.2.1 nor any of its predecessors is a "pure" watershed map because administrative boundaries such as the State border were used to delineate watershed areas. Some of the boundaries, particularly in developed valley areas, also have legal and administrative purposes other than the representation of actual drainage divides. Examples include the so-called "Legal Delta" (California Water Code, Chapter 2, the Delta, Sec. 12220) and other district boundaries. Neither is Calwater a legal map document, as it does not represent State of California Regional Water Quality Control Board (RWQCB) jurisdictions, officiated by the State Water Resources Control Board (SWRCB) under California Water Code Section 13200. Calwater is a hybrid, a spatial cross-reference for use in local, State, and federal information communities. The California Resources Agency (CRA) Department of Forestry and Fire Protection (CDF) contracted with Tierra Data Systems for the original digital production in 1993, based on Hydrologic Basin Planning Maps published in hardcopy (SWRCB, 1986). The State of California Stephen P. Teale Data Center GIS Solutions Group (Teale) under the direction of the California Department of Water Resrouces (DWR) and CDF, finalized the current version in ESRI ArcInfo coverage format in 1999 with USDA Forest Service and RWQCB/SWRCB inputs. The CRA California Spatial Information Library (CaSIL) is the current distributor of the coverage in the Teale Albers Conical Equal-Area projection, North American Datum of 1983. The California Department of Fish and Game (DFG) authored Calwater attribution design and documentation culminating in May 2004 with this Federal Geographic Data Committee (FGDC-STD-001-1998) standard metadata. The purpose of Calwater 2.2.1 is to standardize the boundary delineation, coding, and naming of California watersheds by government agencies. Calwater also cross-references watershed codes implemented by the California Department of Water Resources (DWR), the California State Water Resources Control Board (SWRCB) and Regional Water Quality Control Boards (RWQCB), as well as Hydrologic Unit Codes (HUC) published by the U.S. Geological Survey (USGS) for California and the nation. Standardized watershed delineations, codes, and names from both State and federal systems are used primarily to map, analyze, and document water resources and water quality information and regulations. Examples include water quality reporting to the U.S. Environmental Protection Agency by SWRCB and Timber Harvest Plan tracking by the California Department of Forestry and Fire Protection (CDF). Applications also include regional planning, environmental analysis, hydrology, wildlands research, soils, agriculture, and fish and wildlife habitat management. Calwater is also useful in geographic information systems (GIS) and for online data retrieval. Calwater 2.2.1 and versions to follow are intended to provide a comprehensive geographic frame of reference for the California landscape. This Supplemental Information explains State of California watershed coding, Calwater 2.2.1 designs and limitations, version history, processing, and attributes. Users are advised to carefully review this material before implementing these watershed boundaries, names, or codes within their applications. -- State Watershed Codes -- The Calwater Design Calwater 2.2.1 is designed to divide the State into a series of six nested Levels of watersheds: Hydrologic Region, Hydrologic Unit, Hydrologic Area, Hydrologic Sub-Area, Super-Planning Watershed, and Planning Watershed (Table 1). The principal objective is to uniquely identify (by name or code) all described watershed polygons. As an evolving, integrated set of physical and administrative boundaries along with legacies of coding and naming, Calwater is not without its complexities and inconsistencies. Calwater's strengths are spatial accuracy and attribute versatility. The following Tables are contained at various positions within this document. Search text for "Table <n>" of choice. Table 0. ESRI ArcInfo Coverage Polygon attribute table (calw221.pat) Table 1. Counts of Watersheds by Level Table 2a, 2b. Valid cases of replicated watershed codes and associated acreages Table 3. State and Federal Hydrologic Codes (HUC cross-reference) Table 4. Calwater 2.0 (DWR) and Calwater 2.2 (CDF, SWRCB) Coding Differences Table 0. Polygon Attribute Table Structure "calw221.pat" COL ITEM NAME WIDTH OUTPUT TYPE N.DEC DESCRIPTION 1 AREA 8 18 F 5 Area of Polygon (square meters) 9 PERIMETER 8 18 F 5 Perimeter of Polygon (meters) 17 CALW221# 4 5 B - ArcInfo internal record number 21 CALW221-ID 4 5 B - ArcInfo user id (not used) 25 CALWNUM 12 12 C - Calwater Watershed ID Number (Interagency) 37 SWRCBNUM21 6 6 C - Watershed ID Number (SWRCB at Calwater v2.1) 43 HRC 2 2 C - Hydrologic Region Code (DWR) 45 HBPA 2 2 C - Hydrologic Basin Planning Area (RWQCB) 47 RBU 5 5 I - Concatenates HR,RB,HU into a single integer 52 RBUA 6 6 I - Concatenates HR,RB,HU,HA 58 RBUAS 7 7 I - Concatenates HR,RB,HU,HA,HSA 65 RBUASP 9 9 I - Concatenates HR,RB,HU,HA,HSA,SPWS 74 RBUASPW 11 11 I - Concatenates HR,RB,HU,HA,HSA,SPWS,PWS 85 HR 2 2 I - Hydrologic Region (1->10)(DWR) 87 RB 1 1 I - Regional Water Qual. Cont. Board (1->9)(RWQCB) 88 HU 2 2 I - Hydrologic Unit (00->~80)(SWRCB) 90 HA 1 1 I - Hydrologic Area (0->9)(SWRCB) 91 HSA 1 1 I - Hydrologic Sub-Area (0->9)(SWRCB) 92 SPWS 2 2 I - Super Planning Watershed (00->~30)(CDF) 94 PWS 2 2 I - Planning Watershed (00->~13)(CDF) 96 HRNAME 35 35 C - Hydrologic Region Name (DWR) 131 RBNAME 35 35 C - Regional Water Qual. Cont. Board Name 166 HBPANAME 35 35 C - Hydrologic Basin Planning Area Name 201 HUNAME 35 35 C - Hydrologic Unit Name 236 HANAME 35 35 C - Hydrologic Area Name 271 HSANAME 35 35 C - Hydrologic Sub-Area Name 306 CDFSPWNAME 35 35 C - Super-Planning Watershed Name 341 CDFPWSNAME 35 35 C - Planning Watershed Name 376 ACRES 4 12 F 0 Acreage of watershed polygon 380 HUC_8 8 8 I - Federal 8-digit Hydrologic Unit Code (HUC) 388 HUC_8_NAME 48 48 C - Name of Federal 8-digit HUC 436 HUC_8_ALT2 8 8 I - Second Overlapping HUC 444 HUC_8_ALT3 8 8 I - Third Overlapping HUC 452 DWRNUM20 12 12 C - DWR watershed identifier (Calwater v2.0 MOU) 464 DWRHUNAME 35 35 C - DWR Hydrologic Unit Name (Calwater v2.0) 499 DWRHANAME 35 35 C - DWR Hydrologic Area Name (Calwater v2.0) 534 DWRHSANAME 35 35 C - DWR Hydrologic Sub-Area Name (Calwater v2.0) 569 CDFNUM22 12 12 C - CDF Watershed ID Number (at Calwater v2.2) ------------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------------ Table 1. Calwater 2.2.1 Counts of Watersheds by Level ----------------------------------------------------------------------------- Level Designation Count 1 Hydrologic Regions 10 2 Hydrologic Units 190 3 Hydrologic Areas ~ 522 4 Hydrologic Sub-Areas ~ 655 5 Super Planning Watersheds ~ 1623 6 Planning Watersheds ~ 6271 Note on Table 1: The Hydrologic Region is the only Level fully subdivided into Hydrologic Units. Other levels are partially subdivided and thus computed counts of unique codes will vary. The total of polygons at v2.2.1 is 7035, the number of unique codes is 7008. The total number of Hydrologic Unit names is 185. See Logical Consistency Report. ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ Non-Unique Codes There are several cases of replicated names and codes where 'watershed' designations are cartographically 'fragmented' into multiple polygons. In these cases, each component polygon bears the same name and code (e.g. the Channel Islands chain, polygons 'split' by State and County borders, ground water basins, lake shorelines, etc). The instances of valid, replicated codes are presented below (Table 2a). Table 2a. Calwater 2.2.1. Fragmented ('split') Watersheds with Valid, Replicated Codes by Level Key: Count = Number of watershed polygon fragments RBU = R + B + U, where R = DWR HR numeric code, B = RWQCB numeric code, and U = SWRCB Hydrologic Unit number; RBUA = RBU + A, where A = SWRCB Hydrologic Area number; S = HSA; P = SPWS; W = PWS; see Entity Attribute Metadata. The Hydrologic Region is watershed Level 1. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Hydrologic Unit, Level (2) Count RBU Condition 2 1102 Oregon Border Split 3 3316 Channel Islands Split 8 4406 Channel Islands Split 2 4481 LA/Santa Ana Regional Split (5 polyons in RBU 4801 have same HUNAME) 2 4845 LA/Santa Ana Regional Split 2 6542 Ground Water Line Split Hydrologic Area, Level (3) Count RBUA Condition 2 33091 Federal HUC Split 2 33092 Federal HUC Split 2 33095 Federal HUC Split 3 55061 Federal HUC Split (Shasta Lake) 3 44061 Channel Islands Split 2 44063 Channel Islands Split 6 48451 LA/Santa Ana Regional Split 2 48456 LA/Santa Ana Regional Split 2 65424 Ground Water Line Split 2 96094 Nevada Border Split Hydrologic Sub-Area, Level (4) Count RBUAS Condition 2 330911 Federal HUC Split 3 440610 Channel Islands Split 2 440630 Channel Islands Split 3 480111 Federal HUC Split (East Coastal Plain) 2 440813 Point Mugu Lagoon - 2 parts 6 484515 LA/Santa Ana Regional Split 2 484562 LA/Santa Ana Regional Split 2 551423 Federal HUC Split 2 551425 Ground Water Line Split 2 552662 Federal HUC Split 2 551812 Federal HUC Split (Oroville Reservoir) 2 653721 Lake McClure Split 2 654241 Ground Water Line Split 2 755421 Isabella Reservoir 2 960942 Nevada Border Split Super-Planning Watershed, Level (5) Count RBUASP Condition 3 44061000 Channel Islands Split 2 44063000 Channel Islands Split 2 44081300 Point Mugu Lagoon - 2 parts 6 48451500 LA/Santa Ana Regional Split 2 48456200 LA/Santa Ana Regional Split 2 55062003 Lake Shasta Split 2 55062005 Lake Shasta Split 4 55062008 Lake Shasta Split 2 55142500 Ground Water Line Split 2 55222404 Stony Gorge Reservoir Split 2 96094200 Nevada Border Split Planning Watershed, Level (6) Count RBUASPW Condition 3 3309600404 Ground Water Line Split 2 3309700901 Ground Water Line Split 2 3309200003 Federal HUC Split 2 3309500403 Federal HUC Split 3 4406100000 Channel Islands Split 2 4406300000 Channel Islands Split 2 4408130000 Point Mugu Lagoon - 2 parts 6 4845150000 LA/Santa Ana Regional Split 2 4845620000 LA/Santa Ana Regional Split 2 5526620006 Federal HUC Split 2 5526620008 Federal HUC Split 2 9609420000 Nevada Border Split Notes on Table 2a: 'Ground Water Line' refers to the delineation of Central Valley and Salinas Valley sediments that have historically defined divisions between valley and upland watersheds; 'Regional Splits' refer to watershed boundaries for County-related, administrative purposes; 'Federal HUC Splits' refer to a given State watershed overlapping a federal Hydrologic Unit Code (HUC) boundary (in these cases, an 'artificial' line is inserted within the State watershed to enable accurate cross-references; other 'Splits' refer to the mapping artifact of having an otherwise whole watershed 'split' by State borders and other feature boundaries. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Watershed Sizes In Calwater 2.2.1, all ten of California's Hydrologic Regions are subdivided into a total of 190 Hydrologic Units. However, not all Hydrologic Units are subdivided into Hydrologic Areas, not all Hydrologic Areas are subdivided into Hydrologic Sub-Areas, nor are subdivisions complete at the Super-Planning and Planning Watershed levels. This is most strongly evidenced in the watershed polygon sizes within a given Level. For example, to track Timber Harvest Plan submissions, the California Department of Forestry and Fire Protection (CDF) subdivided watersheds down to the Planning Watershed Level (PWS, code RBUASPW). The PWS design criterion was a polygon size of approximately 3,000 to 10,000 acres. In areas of minimal timber harvest activity, however (the Central Valley, South Coast, and deserts) CDF did not subdivide watersheds, but an undivided polygon still bears a PWS code structure, if not the actual PWS sub-delineation. One example is in the deserts, the Amargosa River watershed, whose actual polygon size is 1.6 million acres. As a general rule, a zero in the value for HA, HSA, SPWS, or PWS (unless it is a leading zero as in 01, 02, 03, etc) is an indication of the watershed being undivided at the subject Level, regardless of size. Some PWS watersheds exhibit 'skipping' of upper Levels (SPWS, HSA, HA) in their coding. Watershed sizes also vary within the Hydrologic Unit (HU, code RBU) and other levels of the State and Regional Water Quality Control Board coding system. In the 1970's and 80's, published HUs and HAs were much smaller (more precisely mapped) in the South Coast than they were in the North Coast. Watershed size differences reflect, then as now, southern California population densities and associated water quality information requirements. For example, the Ventura Coastal Streams HU comprises 22,476 acres, whereas the Eel River HU (Humboldt, Mendocino Counties) encompasses over 2.6 million acres. The representation of a given watershed may also be fragmented on the Calwater 2.2.1 map by the overlap of administrative boundaries. Table 2b presents some examples where watershed total acreage is the sum of the areas of its component polygons. Table 2b. Calwater 2.2.1 Examples of Total Acreages for Fragmented Watersheds ------------------------------------------------------------------------------------------------------------------ Count CALWNUM Name [Field] Total Acreage --------- --------------------- --------------------------------------------------- ----------------------- 6 4845.150000 Central (Split) [Hsaname] 1944 3 4406.100000 Anacapa Island [Haname] 717 2 4845.620000 La Habra (Split) [Cdfpwsname] 12764 2 4408.130000 Point Mugu Lagoon [Hsaname] 358 2 4406.300000 Santa Barbara Island [Haname] 654 3 3309.600404 Sweetwater Creek [Cdfpwsname] 6551 2 3309.110000 Neponset [Hsaname] 73160 2 3309.700901 Crazy Horse Canyon [Cdfpwsname] 2281 3 5506.100000 Shasta Lake [Haname] 28170 2 5514.230000 Folsom Reservoir [Hsaname] 11026 3 5518.120000 Oroville Reservoir [Hsaname] 15470 2 7554.210000 Isabella Reservoir [Hsaname] 11506 2 9609.420000 Shoshone [Hsaname] 496814 Note on Table 2b: Count = Number of watershed polygon fragments. Users must account for these and other cases when calculating watershed acreages by summing individual polygon areas. --------------------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------------------------- Replicated Watershed Names Calwater 2.2.1 also has several instances of replicated watershed names at various Levels, a legacy of State and Regional Water Quality Control Board maps (and an MOU by SWRCB, DWR and USGS in 1986). Version 2.2 of Calwater released by the Stephen P. Teale Data Center (Teale) GIS Solutions Group in September, 1999 indicated this condition with entries of the form "SAME AS HUNAME", "SAME AS HANAME", etc in watershed name fields. This update (Calwater 2.2.1, May 2004) contains the original names as published by the SWRCB and RWQCBs. In cases of replicated names, the watershed designation Level (HU, HA, etc) must be specified along with its name to avoid confusion (there is a known case of two HU code sets with the same HUNAME, SANTA ANA RIVER; see Logical Consistency Report). Users are also advised to reference Calwater's unique watershed codes (with noted exceptions, Table 2). The watershed code ulitmately provides the most reliable identification regardless of Level. Cross-Referencing Challenges Table 3 cross-references State of California Hydrologic Regions with federal Sub-Regions. Within the State system, DWR and SWRCB/RWQCB designations differ in the Central Valley and South Coast. In the Central Valley, DWR codes three Hydrologic Regions (HRs 5, 6, and 7), whereas the SWRCB codes a single Regional Board (RB 5). In contrast, the Central Valley Regional Water Quality Control Board codes three Hydrologic Basin Planning Areas (HBPA: SB, SJ, and TL) that roughly correspond to the three DWR HRs (also note that SB and SR both refer to the Sacramento River Basin). This situation is reversed in the South Coast: three Regional Boards are designated in DWR's one Hydrologic Region. Two other single-letter, historical codesets implemented in DWR Bulletin 130-85 "Hydrologic Data 1985" and in other DWR publications (Bulletins 118, 160, and 230) are listed for reference (but are not currently coded in Calwater 2.2.1). Federal Hydrologic Unit Codes (HUC) In Hydrologic Unit Codes (HUC), the federal system published by USGS (Water Supply Paper 2294, 1986), the nested hierarchy of watershed designations is generally similar to the State system. Differences in use of the term "Hydrologic Region" reflect changes in scope from the national to the state level. The federal HUC Hydrologic Region 18 (California) is defined as "...the drainage within the United States that ultimately discharges into the Pacific Ocean within the state of California; and (b) those parts of the Great Basin (or other closed basins) that discharge into the state of California. Includes parts of California, Nevada, and Oregon" (USGS, 1986, op.cit.). At the State level, each of the ten California "Hydrologic Regions" roughly correspond to a HUC Sub-Region (Table 3). The widely-known HUC designation is an 8-digit code now called the "SubBasin" (Huc_8), roughly equivalent to the State's Hydrologic Area (HA). The SubBasin is also referred to as a "fourth field" watershed, where four 'fields' (2-digits each) progressively define watersheds from the Region (nationally) down to the SubBasin and smaller watersheds. The term "SubBasin" term replaced the term "Cataloging Unit" (CU) in the emerging Watershed Boundary Dataset (WBD) standard (per FGDC Proposal, Version 1.0: "Federal Standards for Delineation of Hydrologic Unit Boundaries"; Section 7.2.1, March 1, 2002); see also the Cross Reference section of this metadata). At Calwater version 2.2.1, the "CU" field was renamed to "Huc_8" (FGDC / WBD, op.cit.). Associated fields formerly named "CUNAME", "CU2", and "CU3" were changed to "HUC_8_NAME", "HUC_8_ALT2", and "HUC_8_ALT3", respectively. State - Federal Watershed Code Cross-Reference Calwater 2.2.1 provides polygon-by-polygon cross-references to federal Sub-Basin codes in its ArcInfo Polygon Attribute Table (.pat), described in the Entity Attribute section of this metadata. Statewide, some 149 federal SubBasins map 1-to-1 with Calwater watersheds. Only 18 Calwater watersheds overlap multiple SubBasins; 5 Calwater watersheds overlap three SubBasins. An exception to the cross-reference design (the SubBasin listed in fields HUC_8 and HUC_8_NAME overlaps 80% or more of the State watershed) is the case of the SEAL_BEACH SubBasin. The majority overlap of the East Coastal Plain HSA is actually with the NEWPORT_BAY SubBasin (a third SubBasin, the SANTA_ANA, also has a minority overlap). This exception enables all of the names of federal SubBasins in California to be contained in a single field "HUC_8_NAME". Note that special 'patch' lines have been inserted into State watersheds to account for the major cases of federal HUC boundaries 'splitting' State watersheds, mostly in reservoir shorelines coded as 'watersheds' by SWRCB (see tables that itemize these cases). Table 3. State and Federal Hydrologic Codes ----------------------------------------------------------------------------------------------------------------------------------------------------- Key HR: DWR Hydrologic Region (1->10) RB: Regional Water Quality Control Board (1->9) BC: DWR Basin Code (1-letter; Bulletin 130-85; Surface Water data) AC: DWR Areal Code (1-letter; Areal Designation Map; Climate, Ground Water) HRC: DWR Hydrologic Region code (2-letter acronym, various pubs.) HBPA: SWRCB Hydrologic Basin Planning Area (2-letter acronym) SUBR: USGS Hydrologic Unit Code (HUC) Sub-Region; includes border States --- HR RB BC AC HRC DWR HR Name HBPA SWRCB/RB Name SUBR -- -- -- -- --- ----------------- ---- ----------------- -------------- 1 1 F F NC North Coast NC North Coast 1801,1710 2 2 E E SF San Francisco Bay SF San Francisco Bay 1805 3 3 D T CC Central Coast CC Central Coast 1806 4 4 Z U SC South Coast LA Los Angeles 1807 5 5 A A SR Sacramento River SB Sacramento Basin 1802 6 5 B B SJ San Joaquin River SJ San Joaquin 1804 7 5 C C TL Tulare Lake TL Tulare Lake 1803 8 6 G G NL North Lahontan NL North Lahontan 1808,1604,1605 9 6 V W SL South Lahontan SL South Lahontan 1809,1606 10 7 W X CR Colorado River CR Colorado River 1810,1503 -- 8 Y Y -- (not defined) SA Santa Ana 1807 -- 9 X Z -- (not defined) SD San Diego 1807 HR SUBR Federal HUC Hydrologic Sub-Region Name (Remarks) --- -------- --------------------------------------------------------------------------------------- 1 1801 Klamath-Northern California Coastal (incl. upper Klamath, OR) 1 1710 Oregon-Washington Coastal (minor CA portion of OR drainages) 2 1805 San Francisco Bay 3 1806 Central California Coastal 4 1807 Southern California Coastal 5 1802 Sacramento 6 1804 San Joaquin 7 1803 Tulare-Buena Vista Lakes 8 1808 North Lahontan (incl. portions of NV basins draining into CA) 8 1604 Black Rock Desert-Humboldt (minor CA portion of NV basins) 8 1605 Central Lahontan (includes Tahoe basin and portions of NV) 8 1712 Oregon Closed Basins (minor CA portion near Goose Lake) 9 1809 Northern Mojave-Mono Lake (minor NV portions included) 9 1606 Central Nevada Desert Basins (minor CA portion) 10 1810 Southern Mojave-Salton Sea 10 1503 Lower Colorado (includes CA portion west of Colorado River) ----------------------------------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------------------------------- Calwater Version History Calwater version 2.2 is the third version of this dataset (after versions 1.2 and 2.0 and 2.1) and was based on 1:500,000-scale Hydrologic Basin Planning Maps published from 1973 through 1986 by the State Water Resources Control Board in Sacramento, California. Version 1.2 was completed in 1995 by Tierra Data Systems, California, under contract to the California Department of Forestry and Fire Protection (CDF). Linework was captured by overlaying SWRCB Hydrologic Basin Planning Area Maps on 1:24,000-scale, 7.5' USGS quads and then redrawing and digitizing lines to match watershed boundaries interpreted from elevation contours. To the four existing SWRCB watershed levels: Hydrologic Regions (Level 1), Hydrologic Units (Level 2), Hydrologic Areas (Level 3), and Hydrologic Sub-Areas (Level 4), CDF created two additional levels to reference their Timber Harvest Plan tracking and other landscape analyses: the Super Planning Watershed (SPWS, Level 5) and the Planning Watersheds (PWS, Level 6). In 1997, the California Department of Water Resources (DWR) initiated adoption of only the first four Levels of Calwater 1.2 for maps associated with their California Water Plan updates of 1998. In addition, DWR worked with the Stephen P. Teale Data Center (Teale) GIS Solutions Group to integrate so-called 'groundwater lines' which define the perimeters of the Central Valley and the Salinas Valley. DWR and Teale also conducted extensive quality assurance on watershed delineation and coding, including inputs from the USDA Forest Service, principally the Klamath, Lassen, Mendocino, Shasta-Trinity, and Six Rivers National Forests. The logical sequence for operational Calwater versions is 2.0, 2.1, 2.2, 2.2.1. This is not an exact chronological sequence, as indicated above. Calwater 2.0 is not in operational use, its main purpose now is the documentation of interagency consensus on 4 Levels of watershed coding, and on watershed boundaries, names, and codes statewide, except the Central Valley floor and selected lakes and reservoirs. Calwater 2.1 represents the State Water Resources Control Board's Hydrological Basin Planning Maps, with boundaries, names, and codes as published in 1986, with modifications at the 1999 release of Calwater 2.2. Calwater 2.2 (1999) represents the California Department of Forestry and Fire Protection (CDF) addition of watershed Levels 5 and 6 to the previously established 4-Level system of 1986 and 1998. The present version, Calwater 2.2.1, modified version 2.2 with database field additions and field name changes, and was subjected to documentation under FGDC-STD-001-1998. There are no boundary, name, or code differences between Calwater versions 2.2 and 2.2.1 (except some 'patch' lines that identify federal HUC differences). In 2001, the USDI Bureau of Reclamation (USBR) and the USDA Natural Resources Conservation Service (NRCS) also worked with the Forest Service and USDI Bureau of Land Management (BLM) to develop hydrologically correct delineations (see Watershed Boundary Dataset, WBD, in Cross References) using Calwater 2.2 as one of several sources. Interagency Cooperation Following a State of California interagency Memorandum of Understanding "Regarding the Use and Maintenance of the California Watershed Map" (finalized by the signatory agencies listed below from 1998 to 2000], the USDI Bureau of Reclamation, USDA Natural Resources Conservation Service, USDA Forest Service, U.S. Geological Survey and other federal agencies continued to work with staffs of National Forests, BLM, Counties, Resource Conservation Districts (RCD), Regional Water Boards, the State's Interagency Watershed Mapping Committee (IWMC), and other interested parties to revise California watershed boundaries for conformance to national standards. Details on the Watershed Boundary Dataset (WBD) are in the Cross References section of this metadata. Interagency Watershed Mapping (Calwater) Committee Members ------------------------------------------------------------------------------------------------------ California Department of Water Resources (DWR) California Department of Forestry and Fire Protection (CDF) California Department of Fish and Game (DFG) California State Water Resources Control Board (SWRCB) USDA Forest Service (USFS) Pacific Southwest Region (R5) USDA Natural Resources Conservation Service (NRCS) U.S. Geologic Survey (USGS) USDI Bureau of Reclamation (USBR) USDI Bureau of Land Management (BLM) U.S. Environmental Protection Agency (USEPA) Region IX Stephen P. Teale Data Center (Teale) GIS Solutions Group ----------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------- --End Supplemental Information =================================================================================== -- The following excerpts describe the version of Calwater 2.2 released by the State of California Stephen P. Teale Data Center GIS Solutions Group in September, 1999. Editorial comments [in square braces] by the California Department of Fish and Game, April, 2004 -- LIBRARY : CA LAYER NAME : CALWATER22 COVERAGE NAME : CALW22A COVERAGE DESCRIPTION: The California Watershed Map (CALWATER version 2.2) is a set of standardized watershed boundaries meeting standardized delineation criteria. The hierarchy of watershed designations consists of six levels of increasing specificity: Hydrologic Region (HR), Hydrologic Unit (HU), Hydrologic Area (HA), Hydrologic Sub-Area (HSA), Super Planning Watershed (SPWS), and Planning Watershed (PWS). The primary purpose of Calwater is the assignment of a single, unique code to a specific watershed polygon. While there are 7022 polygons in the ARC/INFO coverage, there are actually fewer watershed codes. This is due to cases of multiple polygons bearing the same watershed code (Channel Islands, split polygons due to other boundary integration, e.g. ground water basins). Another confusing factor is that not all Hydrologic Units are subdivided into Hydrologic Areas, not all Hydrologic Areas are subdivided into Hydrologic Sub-Areas, and so on. Therefore, a nominal count of watershed codes in Calwater 2.2 is: Hydrologic Regions: 10 Hydrologic Units: 190 Hydrologic Areas: 522 Hydrologic Sub-Areas: 655 Super Planning Watersheds: 1623 Planning Watersheds: 6271 [see Version History above] VITAL STATISTICS: Datum: NAD 27 [updated to NAD 83 as of May 2004] Projection: Albers Units: Meters 1st Std. Parallel: 34 00 00 (34.0 degrees N) 2nd Std. Parallel: 40 30 00 (40.5 degrees N) Longitude of Origin: -120 00 00 (120.0 degrees W) Latitude of Origin: 00 00 00 (0.0 degrees) False Easting (X shift): 0 False Northing (Y shift): -4,000,000 Source: 1:24,000 USGS Quad Maps Source Media: Paper Source Projection: Polyconic Source Units: Meters Source Scale: 1:24,000 Capture Method: Original digitizing by J. Kellogg and staff (Tierra Data Systems) Conversion Software: ARC/Info rev 7.2.1 Data Structure: Vector ARC/INFO Coverage Type: Polygon, Line (Network) ARC/INFO Precision: Double ARC/INFO Tolerances: Fuzzy tolerance - 2 meters Dangle Length - .1 meters Number of Features: 7022 polygons [updated to 7035 as of May, 2004] Layer Size: 30.5 megabytes Data Updated: September 1999 [updated May 2004] DATA DICTIONARY: DATAFILE NAME: CALW22A.PAT COL ITEM NAME WIDTH OUTPUT TYPE N.DEC 1 AREA 8 18 F 5 9 PERIMETER 8 18 F 5 17 CALW22A# 4 5 B - 21 CALW22A-ID 4 5 B - 25 IDNUM 12 12 C - 37 HRC 2 2 C - 39 HBPA 2 2 C - 41 RBU 5 5 I - 46 RBUA 6 6 I - 52 RBUAS 7 7 I - 59 RBUASP 9 9 I - 68 RBUASPW 11 11 I - 79 HR 2 2 I - 81 RB 1 1 I - 82 HU 2 2 I - 84 HA 1 1 I - 85 HSA 1 1 I - 86 SPWS 2 2 I - 88 PWS 2 2 I - 90 HRNAME 35 35 C - 125 RBNAME 35 35 C - 160 HBPANAME 35 35 C - 195 HUNAME 35 35 C - 230 HANAME 35 35 C - 265 HSANAME 35 35 C - 300 SPWSNAME 35 35 C - 335 PWSNAME 35 35 C - 370 ACRES 4 12 F 0 374 CU 8 8 I - 382 CUNAME 48 48 C - 430 CU2 8 8 I - 438 CU3 8 8 I - 446 IDNUM_20 12 12 C - 458 HUNAME_20 35 35 C - 493 HANAME_20 35 35 C - 528 HSANAME_20 35 35 C - IDNUM : ID NUMber of watershed (DWR+SWRCB/RWQCB+CDF) HRC : Hydrologic Region Code (DWR) HBPA : Hydrologic Basin Planning Area (SWRCB) RBU : Aggregate of HR,RB,HU RBUA : Aggregate of HR,RB,HU,HA RBUAS : Aggregate of HR,RB,HU,HA,HSA RBUASP : Aggregate of HR,RB,HU,HA,HSA,SPWS RBUAPSW : Aggregate of HR,RB,HU,HA,HSA,SPWS,PWS HR : Hydrologic Region (1->10) RB : Regional Water Qual. Cont. Board (1->9) HU : Hydrologic Unit (00->~80) HA : Hydrologic Area (0->9) HSA : Hydrologic Sub-Area (0->9) SPWS : Super Planning Watershed (00->~30) PWS : Planning Watershed (00->~15) HRNAME : Hydrologic Region Name RBNAME : Regional Water Qual. Cont. Board Name HBPANAME : Hydrologic Basin Planning Area Name HUNAME : Hydrologic Unit Name HANAME : Hydrologic Area Name HSANAME : Hydrologic Sub-Area Name SPWSNAME : Super Planning Watershed Name PWSNAME : Planning Watershed Name ACRES : Acreage of watershed polygon CU : Cataloging Unit (Fed. HUC), overlap #1 CUNAME : Cataloging Unit name, overlapping CU #1 CU2 : Cataloging Unit, overlapping CU #2 CU3 : Cataloging Unit, overlapping CU #3 IDNUM_20 : Calwater 2.0 IDNUM (DWR dissolver) HUNAME_20 : Calwater 2.0 HUNAME (DWR dissolver) HANAME_20 : Calwater 2.0 HANAME (DWR dissolver) HSANAME_20 : Calwater 2.0 HSANAME (DWR dissolver) DATAFILE NAME: CALW22A.AAT COL ITEM NAME WIDTH OUTPUT TYPE N.DEC 1 FNODE# 4 5 B - 5 TNODE# 4 5 B - 9 LPOLY# 4 5 B - 13 RPOLY# 4 5 B - 17 LENGTH 8 18 F 5 25 CALW22A# 4 5 B - 29 CALW22A-ID 4 5 B - 33 LEVEL 2 5 B - LEVEL : Highest level of difference between right and left side watersheds (e.g. 3 indicates different HAs) IDNUM TO HUC CROSSWALK Calwater maps fairly neatly to the federal Hydrologic Unit Codes (HUCS). Generally Calwater watersheds fit within HUCs, though there are some exceptions: The IDNUM to HUC cross-reference was developed with the following rules: For a given [state] Calwater watershed, overlapping [federal] Hydrologic Unit Codes (at the 8-digit Cataloging Unit [CU] level) are listed up to a maximum of 80% of the Calwater watershed OR three CUs, whichever comes first. For example: Where there are two CU codes (CU and CU2) listed for a given Calwater code (only 18 [17] watersheds fit this criterion), the largest CU alone overlaps less than 80% of the Calwater watershed, but combining CU2 then provides overlap of at least 80% of the Calwater watershed. Where there are three CU codes (CU, CU2, and CU3) listed for a given Calwater watershed (only 1 watershed fits this criterion, [the East Coastal Plain HSA (Orange County), where CU3 = 18070203, named SEAL_BEACH], the largest 2 CUs together overlap less than 80% of the Calwater watershed; combining a third CU code produces additional overlap. Complete overlap statistics are left for calculation by the user. If a watershed consists of multiple polygons (because it is split by the groundwater line, the state boundary, or it is comprised of multiple islands), the total area of the watershed (the sum of all the polygons) is the value entered in the ACRES item [in 2004 at Calwater version 2.2.1 (calw221) this was changed so that ACRES now contains only individual polygon acreages; this reduces risks of double counting areas]. The individual polygons of a multi-polygon watershed all have the same watershed code. These cases are itemized below: LEGITIMATE DUPLICATE CODES (MULTIPLE POLYGONS FOR A SINGLE WATERSHED): Hydrologic Unit Level Count RBU Condition 2 1102 Oregon Border Split 3 3316 Channel Islands Split 8 4406 Channel Islands Split 2 4481 LA/Santa Ana Regional Split [see notes above] 2 4845 LA/Santa Ana Regional Split 2 6542 Ground Water Line Split ... [Complete itemization in presented in Table 2a of this metadata] DATA QUALITY ASSESSMENT: The following are subjective comments regarding this data: CALWATER boundaries were digitized on a 1:24,000-scale base and thus very accurately divide surface water features depicted on 1:100,000-scale Digital Line Graph hydrography. However, CALWATER delineations are primarily designed to be administrative reporting units, and the boundaries should not be used to define authoritative drainage area above a given point as a portion of their definition includes non-physical boundaries, particularly in valley floor and urbanized coastal regions. Attribute completeness is good. Compatibility with existing state and federal watershed delineations is good, except where explicitly different boundary configurations are applied. DOCUMENTATION DATE: September 1999 ======================================================================== -- End Teale metatdata excerpts [DFG edits May, 2004] -- Calwater Status On July 1, 2001 custodial responsibility for Calwater 2.2 was transferred, upon closure of Teale GIS Solutions Group operations, to the California Resources Agency in Sacramento. Efforts are underway as of 2004 to also host Calwater at a node of the National Biological Information Infrastructure (NBII) at the University of California Davis Information Center for the Environment (UCD / ICE). The current version is called Calwater 2.2.1 ("calw221") and is dated May 2004. The California Resources Agency's California Spatial Information Library (CaSIL) is the current distributor of Calwater. en 197304 199909 publication date In work Irregular -124.506151 -113.497815 42.068675 32.423713 none watershed boundaries water resources inlandWaters environment boundaries watersheds hydrologic unit codes water quality reporting waterbody beneficial use impaired waterbodies none California none Cite Originator as California Interagency Watershed Mapping Committee; include complete metadata in redistributions Watershed Specialist California Department of Forestry and Fire Protection (CDF) mailing address

California Department of Forestry and Fire Protection

Attn: Fire and Resources Assessment Program

P.O. Box 944246

Sacramento California CA 94244-2460 USA (916) 445-5342 chris.keithley@fire.ca.gov California Interagency Watershed Mapping Committee: California Department of Water Resources (DWR), California Department of Forestry and Fire Protection (CDF), California Department of Fish and Game (DFG), California State Water Resources Control Board (SWRCB), USDA Forest Service (USFS) Pacific Southwest Region (R5), USDA Natural Resources Conservation Service (NRCS), U.S. Geologic Survey (USGS), USDI Bureau of Reclamation (USBR), USDI Bureau of Land Management (BLM), U.S. Environmental Protection Agency (USEPA) Region IX, Stephen P. Teale Data Center (Teale GIS Solutions Group). none not applicable not applicable ESRI ArcCatalog 8.3.0.800 State Water Resources Control Board (SWRCB) Regional Water Quality Control Boards (RWQCB) 1986 1986 paper maps Hydrologic Basin Planning Area Maps 1986 Sacramento California State Water Resources Control Board 12 maps in the series for California statewide; See also 1986 MOU signed by SWRCB / RWQCBs, DWR, and USGS for standardization of watershed names. U.S. Geological Survey 1994 1 vector digital data Originally published circa 1973 as paper maps at 1:500,000-scale with California as part of a nationwide series; later revised with reference publication USGS Water Supply Paper 2294 (1987); See USGS online linkage for digital form at 1:250,000- and 1:2,000,000-scales. http://water.usgs.gov/GIS/huc.html http://water.usgs.gov/GIS/metadata/usgswrd/huc250k.html http://water.usgs.gov/lookup/getspatial?huc250k Federal Geographic Data Committee (FGDC) Natural Resources Conservation Service (NRCS) USDI Bureau of Reclamation U.S. Geological Survey 20020301 1.0 document Federal Standards for Delineation of Hydrologic Unit Boundaries (FGDC Proposal, Version 1.0) http://www.ftw.nrcs.usda.gov/HUC/HU_standards_v1_030102.doc http://www.fgdc.gov/standards/documents/proposals/fgdc_hu_proposal.doc California Department of Water Resources (DWR) California Interagency Watershed Mapping Committee 1998 document Memorandum of Understanding on the Use and Maintenance of the California Watershed Map (state and federal signatory agencies, 1998 - 2000); references a previous Calwater version for maps in the California Water Plan - DWR Bulletin 160 - 1998. State Water Resources Control Board (SWRCB) California Department of Water Resources U.S. Geological Survey 1986 document Memorandum of Understanding (formal title unknown) cited by the SWRCB with DWR and USGS for watershed names and codes as published on SWRCB Hydrologic Basin Planning Area Maps, 1986 revision. California State Water Resources Control Board California Department of Water Resources 1976 document This Operating Understanding (OU) contains the formal identification of four levels of watershed designations in California, beginning with the division of the entire State into 12 hydrologic basins. The OU ites the "Water Quality Coordination Summary", transmitted to the California Legislature on May 6, 1975, which describes the coordination of SWRCB and DWR in statutory, authorized water quality-related matters. State Water Resources Control Board, Division of Water Quality, Nonpoint Source Program 198811 document Report Mandated by the federal Clean Water Act, Sections 303d, 304, 314, and 319, and 40CFR131.11. Appendix H contains 2 components 1. "Hydrologic Basin Codes": a printout for each [Hydrologic] Region showing current watershed names and the State Board [Code], DWR [Areal Code], and USGS [8-digit HUC] codes. ["...In 1978 the State Water Resources Control Board, the California Department of Resources, and the U.S. Geological Survey agreed on revised boundaries and names for watersheds in the State. Each Agency retained its own coding system. The State Board and DWR agreed on a common watershed hierarchical nomenclature of Hydrologic Basins (HB), Units (HU), Areas (HA) and Subareas (HSA), dropping the old term "Subunit" (SU)..." [see previous 1976 SWRCB / DWR Operating Understanding for California watershed designations] 2. "Modified Hydrologic Basins": a printout for each Region showing only those watersheds which have had a name, code, and/or boundary update [at 1986 revision of SWRCB Hydrologic Basin Planning Area maps]. See other Cross-References in this metadata. Personal GeoDatabase Feature Class Calwater contains unique codes and names for over 99% of the 7035 watershed polygons described (exceptions are detailed in Supplemental Information and in the Logical Consistency and Completeness Reports in this metadata). A quantitative analysis of conformance to federal watershed delineation standards is in progress. The field ACRES (numeric figure, zero decimal places) is provided for only general comparison of watershed sizes; no accuracy assesment has been performed. Note that in reprojecting Calwater 2.2 from the North American Datum of 1927 (NAD 27) to NAD 83, some minor changes in acreages were obtained. All acreage changes measure less than one tenth of one percent, with the observed maximum difference being 44 acres in the 1.6 million-acre Stove Pipe Wells HSA (SWRCBNUM21 = 609.11). Calwater 2.2.1 Logical Consistency Report The logical consistency of Calwater 2.2.1 (May 2004 Update, "calw221") was examined by reviewing watershed coding at various levels and by comparison to previously-published watershed maps. Calwater 2.2.1 boundaries were digitized on a 1:24,000-scale USGS topographic map base and thus accurately divide surface water features depicted at that scale as well as on 1:100,000-scale Digital Line Graph hydrography. However, Calwater 2.2.1 delineations are primarily designed to be administrative reporting units, and the boundaries should not be used to define authoritative drainage area above a given point as a portion of their definition includes non-physical boundaries, particularly in valley floor and urbanized coastal regions. Attribute completeness is good. Compatibility with existing state and federal watershed delineations is good, except where explicitly different boundary configurations are applied. Calwater 2.2.1 is designed to uniquely identify each watershed polygon. There are, however, several cases where multiple polygons bearing replicates of the same watershed code (e.g. Channel Islands, split polygons due to other boundary integration, such as ground water basin boundaries, State boundaries, etc). The approximate number of actual watershed designations by level (Table 1) and the instances of valid, duplicated codes (Tables 2a and 2b) are presented below. Table 3 provides State - Federal cross-references of watershed codes and names. In Calwater 2.2.1, all ten of California's Hydrologic Regions are subdivided into a total of 190 Hydrologic Units (there are actually only 185 Hydrologic Unit names because five polygons in RBU 4481 have the same HUNAME (SANTA ANA RIVER) as 42 polygons in RBU 4801 due to a County-line split of the actual watershed polygons). However, not all Hydrologic Units are subdivided into Hydrologic Areas, not all Hydrologic Areas are subdivided into Hydrologic Sub-Areas, nor are subdivisions complete at the Super-Planning and Planning Watershed levels. This is most strongly evidenced in the watershed polygon sizes within a given level. For example, to track Timber Harvest Plan submissions, the California Department of Forestry and Fire Protection (CDF) subdivided watersheds down to the Planning Watershed level (PWS, code RBUASPW). The PWS was designed around a polygon size of approximately 3,000 to 10,000 acres. In areas of minimal timber harvest activity (Central Valley, South Coast, and Deserts) CDF did not subdivide watersheds, leaving some individual polygons totalling as much as 1.6 million acres. Where watersheds are undivided, "undefined" is entered in the watershed name fields for appropriate levels. There are also cases where Calwater version 2.2 has watersheds subdivided to Level 5 and 6 in larger, previously undivided watersheds (at Levels 2 and 3) on the SWRCB maps of 1986. In other words, 'Level-skipping' has occurred in the process of defining the most detailed level of watersheds (at Level 6, the 'Planning Watershed', PWS). This has significance for pre-Calwater users of watershed coding at DWR and SWRCB because, if the 4-Level coding schema is followed, there are several instances where 'undefined' will apply to not only the PWS, but also to higher Levels: the Hydrologic Area (HA, Level 3) and Hydrologic Sub-Area (HSA, Level 4). Watershed sizes also vary within the Hydrologic Unit (HU, code RBU) and other levels of the State and Regional Water Quality Control Board coding system. In the 1970's and 80's, published HUs and HAs were much smaller (more precisely mapped) in the South Coast than they were in the North Coast. Watershed size differences reflect, then as now, southern California population densities and associated water quality information requirements. For example, the Ventura Coastal Streams HU comprises 22,476 acres, whereas the Eel River HU (Humboldt, Mendocino Counties) encompasses over 2.6 million acres. Calwater 2.2.1 also has several instances of duplicated watershed names at various Levels, a legacy of State and Regional Water Quality Control Board maps (and an MOU with DWR and USGS in 1986). Users are advised to reference unique watershed codes (with noted exceptions, Table 2) as these are the most reliable identifiers at all watershed levels. Within the State system, DWR and SWRCB/RWQCB designations differ in the Central Valley and South Coast. In the Central Valley, DWR codes three Hydrologic Regions (HRs 5, 6, and 7); SWRCB codes 1 Regional Board (RB 5). In contrast, within the same Central Valley, the Regional and State Water Boards code three Hydrologic Basin Planning Areas (HBPA) that roughly correspond to the three DWR HRs. Conversely, the State Board recognizes three Regional Boards in DWR's South Coast HR. Note that the two-letter acronyms SR and SB both refer to the Sacramento River basin Table 1. Calwater 2.2.1 Watershed Levels and Numbers of Watershed Designations ---------------------------------------------------------------------------------------------- Level Designation Count 1 Hydrologic Regions 10 2 Hydrologic Units 190 3 Hydrologic Areas ~ 522 4 Hydrologic Sub-Areas ~ 655 5 Super Planning Watersheds ~ 1623 6 Planning Watersheds ~ 6271 Note on Table 1: The Hydrologic Region is the only Level fully subdivided into Hydrologic Units. Other levels are partially subdivided and thus computed counts of unique codes will vary. The total of polygons at v2.2 is 7022, the number of unique codes is 7008. The total number of Hydrologic Unit names is 185. See Logical Consistency Report. --------------------------------------------------------------------------------------------- Table 2a. Calwater 2.2.1. Fragmented ('split') Watersheds with Valid, Replicated Codes by Level Key: Count = Number of watershed polygon fragments RBU = R + B + U, where R = DWR HR numeric code, B = RWQCB numeric code, and U = SWRCB Hydrologic Unit number; RBUA = RBU + A, where A = SWRCB Hydrologic Area number; S = HSA; P = SPWS; W = PWS; see Entity Attribute Metadata. The Hydrologic Region is watershed Level 1. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Hydrologic Unit, Level (2) Count RBU Condition 2 1102 Oregon Border Split 3 3316 Channel Islands Split 8 4406 Channel Islands Split 2 4481 LA/Santa Ana Regional Split (5 polyons in RBU 4801 have same HUNAME) 2 4845 LA/Santa Ana Regional Split 2 6542 Ground Water Line Split Hydrologic Area, Level (3) Count RBUA Condition 2 33091 Federal HUC Split 2 33092 Federal HUC Split 2 33095 Federal HUC Split 3 55061 Federal HUC Split (Shasta Lake) 3 44061 Channel Islands Split 2 44063 Channel Islands Split 6 48451 LA/Santa Ana Regional Split 2 48456 LA/Santa Ana Regional Split 2 65424 Ground Water Line Split 2 96094 Nevada Border Split Hydrologic Sub-Area, Level (4) Count RBUAS Condition 2 330911 Federal HUC Split 3 440610 Channel Islands Split 2 440630 Channel Islands Split 3 480111 Federal HUC Split (East Coastal Plain) 2 440813 Point Mugu Lagoon - 2 parts 6 484515 LA/Santa Ana Regional Split 2 484562 LA/Santa Ana Regional Split 2 551423 Federal HUC Split 2 551425 Ground Water Line Split 2 552662 Federal HUC Split 2 551812 Federal HUC Split (Oroville Reservoir) 2 653721 Lake McClure Split 2 654241 Ground Water Line Split 2 755421 Isabella Reservoir 2 960942 Nevada Border Split Super-Planning Watershed, Level (5) Count RBUASP Condition 3 44061000 Channel Islands Split 2 44063000 Channel Islands Split 2 44081300 Point Mugu Lagoon - 2 parts 6 48451500 LA/Santa Ana Regional Split 2 48456200 LA/Santa Ana Regional Split 2 55062003 Lake Shasta Split 2 55062005 Lake Shasta Split 4 55062008 Lake Shasta Split 2 55142500 Ground Water Line Split 2 55222404 Stony Gorge Reservoir Split 2 96094200 Nevada Border Split Planning Watershed, Level (6) Count RBUASPW Condition 3 3309600404 Ground Water Line Split 2 3309700901 Ground Water Line Split 2 3309200003 Federal HUC Split 2 3309500403 Federal HUC Split 3 4406100000 Channel Islands Split 2 4406300000 Channel Islands Split 2 4408130000 Point Mugu Lagoon - 2 parts 6 4845150000 LA/Santa Ana Regional Split 2 4845620000 LA/Santa Ana Regional Split 2 5526620006 Federal HUC Split 2 5526620008 Federal HUC Split 2 9609420000 Nevada Border Split Notes on Table 2a: 'Ground Water Line' refers to the delineation of Central Valley and Salinas Valley sediments that have historically defined divisions between valley and upland watersheds; 'Regional Splits' refer to watershed boundaries for County-related, administrative purposes; 'Federal HUC Splits' refer to a given State watershed overlapping a federal Hydrologic Unit Code (HUC) boundary (in these cases, an 'artificial' line is inserted within the State watershed to enable accurate cross-references; other 'Splits' refer to the mapping artifact of having an otherwise whole watershed 'split' by State borders and other feature boundaries. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Table 2b. Calwater 2.2.1 Examples of Total Acreages for Fragmented Watersheds ------------------------------------------------------------------------------------------------------------------ Count CALWNUM Name [Field] Total Acreage --------- --------------------- --------------------------------------------------- ----------------------- 6 4845.150000 Central (Split) [Hsaname] 1944 3 4406.100000 Anacapa Island [Haname] 717 2 4845.620000 La Habra (Split) [Cdfpwsname] 12764 2 4408.130000 Point Mugu Lagoon [Hsaname] 358 2 4406.300000 Santa Barbara Island [Haname] 654 3 3309.600404 Sweetwater Creek [Cdfpwsname] 6551 2 3309.110000 Neponset [Hsaname] 73160 2 3309.700901 Crazy Horse Canyon [Cdfpwsname] 2281 3 5506.100000 Shasta Lake [Haname] 28170 2 5514.230000 Folsom Reservoir [Hsaname] 11026 3 5518.120000 Oroville Reservoir [Hsaname] 15470 2 7554.210000 Isabella Reservoir [Hsaname] 11506 2 9609.420000 Shoshone [Hsaname] 496814 Note on Table 2b: Count = Number of watershed polygon fragments. Users must account for these and other cases when calculating watershed acreages by summing individual polygon areas. --------------------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------------------------- State - Federal Watershed Code Cross-Reference Calwater 2.2.1 provides polygon-by-polygon cross-references to federal Sub-Basin codes in its ArcInfo Polygon Attribute Table (.pat), described in the Entity Attribute section of this metadata. Statewide, some 149 federal SubBasins map 1-to-1 with Calwater watersheds. Only 18 Calwater watersheds overlap multiple SubBasins; 5 Calwater watersheds overlap three SubBasins. An exception to the cross-reference design (the SubBasin listed in fields HUC_8 and HUC_8_NAME overlaps 80% or more of the State watershed) is the case of the SEAL_BEACH SubBasin. The majority overlap of the East Coastal Plain HSA is actually with the NEWPORT_BAY SubBasin (a third SubBasin, the SANTA_ANA, also has a minority overlap). This exception enables all of the names of federal SubBasins in California to be contained in a single field "HUC_8_NAME". Note that special 'patch' lines have been inserted into State watersheds to account for the major cases of federal HUC boundaries 'splitting' State watersheds, mostly in reservoir shorelines coded as 'watersheds' by SWRCB (see tables that itemize these cases). Table 3. State and Federal Hydrologic Codes ----------------------------------------------------------------------------------------------------------------------------------------------------- Key HR: DWR Hydrologic Region (1->10) RB: Regional Water Quality Control Board (1->9) BC: DWR Basin Code (1-letter; Bulletin 130-85; Surface Water data) AC: DWR Areal Code (1-letter; Areal Designation Map; Climate, Ground Water) HRC: DWR Hydrologic Region code (2-letter acronym, various pubs.) HBPA: SWRCB Hydrologic Basin Planning Area (2-letter acronym) SUBR: USGS Hydrologic Unit Code (HUC) Sub-Region; includes border States --- HR RB BC AC HRC DWR HR Name HBPA SWRCB/RB Name SUBR -- -- -- -- --- ----------------- ---- ----------------- -------------- 1 1 F F NC North Coast NC North Coast 1801,1710 2 2 E E SF San Francisco Bay SF San Francisco Bay 1805 3 3 D T CC Central Coast CC Central Coast 1806 4 4 Z U SC South Coast LA Los Angeles 1807 5 5 A A SR Sacramento River SB Sacramento Basin 1802 6 5 B B SJ San Joaquin River SJ San Joaquin 1804 7 5 C C TL Tulare Lake TL Tulare Lake 1803 8 6 G G NL North Lahontan NL North Lahontan 1808,1604,1605 9 6 V W SL South Lahontan SL South Lahontan 1809,1606 10 7 W X CR Colorado River CR Colorado River 1810,1503 -- 8 Y Y -- (not defined) SA Santa Ana 1807 -- 9 X Z -- (not defined) SD San Diego 1807 HR SUBR Federal HUC Hydrologic Sub-Region Name (Remarks) --- -------- --------------------------------------------------------------------------------------- 1 1801 Klamath-Northern California Coastal (incl. upper Klamath, OR) 1 1710 Oregon-Washington Coastal (minor CA portion of OR drainages) 2 1805 San Francisco Bay 3 1806 Central California Coastal 4 1807 Southern California Coastal 5 1802 Sacramento 6 1804 San Joaquin 7 1803 Tulare-Buena Vista Lakes 8 1808 North Lahontan (incl. portions of NV basins draining into CA) 8 1604 Black Rock Desert-Humboldt (minor CA portion of NV basins) 8 1605 Central Lahontan (includes Tahoe basin and portions of NV) 8 1712 Oregon Closed Basins (minor CA portion near Goose Lake) 9 1809 Northern Mojave-Mono Lake (minor NV portions included) 9 1606 Central Nevada Desert Basins (minor CA portion) 10 1810 Southern Mojave-Salton Sea 10 1503 Lower Colorado (includes CA portion west of Colorado River) ----------------------------------------------------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------------------------------------------- Table 4: Calwater 2.0 (DWR) and Calwater 2.2 (CDF, SWRCB) Coding Differences at the Hydrologic Sub-Area (HSA) Watershed Level (Level 4). Key: Cdfgnum22 = California Department of Forestry (CDF) watershed ID at Calwater version 2.2 (1999). Swrcbnum21, Hsaname = California State Water Resources Control Board (SWRCB) watershed ID and name as published on Hydrologic Basin Planning Area Maps (revised 1986, with exceptions noted in Completeness Report) Dwrnum20, Dwrhsaname = California Department of Water Resources (DWR) alternate watershed ID and name at Calwater version 2.0 (1998) "undefined" = Cases where watersheds designated in levels above the HSA (HU, HA) were not subdivided; this occurs in 89 of 116 total cases of code differences between SWRCB (Calwater 2.1) and DWR (Calwater 2.0, 1998). Cdfnum22 Swrcbnum21 Hsaname Dwrnum20 Dwrhsaname ---------------------------------------------------------------------------------------------------------------- 3314.520000 314.52 Lake Cachuma 3314.510000 Santa Cruz Creek 3309.820000 309.82 Nacimiento Res3309.810000 Atascadero 3309.830000 309.83 San Antonio Re3309.810000 Atascadero 8637.320000 637.32 Eagle Lake 8637.310000 undefined 5527.200000 527.20 undefined 5527.100000 Goose Lake 5506.100000 506.10 undefined 5506.200000 Shasta Lake 5508.100002 508.10 undefined 5572.000000 undefined 5524.610000 524.61 Whiskeytown L.5524.630000 Middle Clear 5508.100001 508.10 undefined 5571.000000 undefined 5508.200000 508.20 undefined 5571.000000 undefined 5518.410000 518.41 Lake Almador 5518.440000 Mount Harkness 5504.200001 504.20 undefined 5571.000000 undefined 5504.200002 504.20 undefined 5572.000000 undefined 5504.310000 504.31 Kendrick Cr. 5571.000000 undefined 5504.100000 504.10 undefined 5571.000000 undefined 5504.320000 504.32 Black Butte L.5571.000000 undefined 5520.210000 520.21 Colusa Trough 5571.000000 undefined 5520.220000 520.22 Orland 5571.000000 undefined 5520.400001 520.40 undefined 5572.000000 undefined 5518.120000 518.12 Oroville Res. 5518.110000 Reservoir Drain 5520.400002 520.40 undefined 5571.000000 undefined 5522.220000 522.22 StonyGorge Res5522.240000 Briscoe Creek 5515.400000 515.40 undefined 5572.000000 undefined 5522.330000 522.33 East Park Res.5522.310000 Middle Fork Stony 5520.300000 520.30 undefined 5572.000000 undefined 5520.100002 520.10 undefined 5571.000000 undefined 5515.300000 515.30 undefined 5572.000000 undefined 5520.100001 520.10 undefined 5572.000000 undefined 5515.200000 515.20 undefined 5572.000000 undefined 5513.520000 513.52 Clear Lake 5513.510000 Lower Lake 5515.100000 515.10 undefined 5572.000000 undefined 5519.220000 519.22 Pleasant Grove5572.000000 undefined 5511.300000 511.30 undefined 5571.000000 undefined 5519.210000 519.21 Lower American5572.000000 undefined 5514.230000 514.23 Folsom Res. 5514.210000 Green Valley 5511.200000 511.20 undefined 5571.000000 undefined 5512.210000 512.21 Lake Berryessa5512.220000 Capell Creek 6531.120000 531.12 Lower Deer Cr.6552.000000 undefined 5519.110000 519.11 Franklin 5572.000000 undefined 5511.100000 511.10 undefined 5571.000000 undefined 6531.110000 531.11 Herald 6552.000000 undefined 6531.200000 531.20 undefined 6552.000000 undefined 6534.420000 534.42 Beardsley L. 6534.410000 Dardenelle 6531.300000 531.30 undefined 6552.000000 undefined 6531.400000 531.40 undefined 6552.000000 undefined 6536.520000 536.52 Cherry Lake 6536.510000 Mercut Peak 6534.210000 534.21 New Melones Re6534.220000 Angels Camp 6536.530000 536.53 Lake Eleanor 6536.510000 Mercut Peak 6535.100000 535.10 undefined 6552.000000 undefined 6536.320000 536.32 New DonPedro R6536.310000 Sonora 6535.400000 535.40 undefined 6552.000000 undefined 6535.200000 535.20 undefined 6552.000000 undefined 6535.300000 535.30 undefined 6552.000000 undefined 6575.000000 575.00 undefined 6551.000000 undefined 6541.100000 541.10 undefined 6551.000000 undefined 6537.220000 537.22 Lake McClure 6537.210000 Coulterville 6535.600000 535.60 undefined 6552.000000 undefined 6535.500000 535.50 undefined 6552.000000 undefined 6535.900000 535.90 undefined 6552.000000 undefined 6535.800000 535.80 undefined 6552.000000 undefined 6535.700000 535.70 undefined 6552.000000 undefined 6541.200000 541.20 undefined 6551.000000 undefined 6540.220000 540.22 Bass Lake 6540.210000 Wishon 6539.120000 539.12 Buchanon Res. 6539.110000 Chapman Creek 6540.520000 540.52 Huntington L. 6540.510000 Big Creek 6545.300200 545.30 undefined 6552.000000 undefined 6545.200000 545.20 undefined 6552.000000 undefined 6539.320000 539.32 Hensley Res. 6539.310000 Coarse Gold Creek 6542.320000 542.32 San Luis Res. 6542.310000 Romero Creek 6545.100000 545.10 undefined 6552.000000 undefined 6540.120000 540.12 Millerton Lake6540.110000 Fine Gold Creek 6542.420000 542.42 Los Banos Res.6542.410000 Unknown 6545.300100 545.30 undefined 6552.000000 undefined 7551.400000 551.40 undefined 7561.000000 undefined 7552.320000 552.32 Pine Flat Res.7552.310000 Sycamore Creek 7551.300000 551.30 undefined 7561.000000 undefined 7551.600000 551.60 undefined 7561.000000 undefined 7551.120000 551.12 Lower Panoche 7561.000000 undefined 7551.200000 551.20 undefined 7561.000000 undefined 7551.110000 551.11 Huron 7561.000000 undefined 7551.700000 551.70 undefined 7561.000000 undefined 7551.500000 551.50 undefined 7561.000000 undefined 7551.800000 551.80 undefined 7561.000000 undefined 7558.100000 558.10 undefined 7562.000000 undefined 7551.900000 551.90 undefined 7561.000000 undefined 7553.440000 553.44 Lake Kaweah 7553.410000 North Fork Kaweah 7558.500106 558.50 undefined 7562.000000 undefined 7558.300000 558.30 undefined 7562.000000 undefined 7558.500105 558.50 undefined 7562.000000 undefined 7558.200000 558.20 undefined 7562.000000 undefined 7558.500202 558.50 undefined 7562.000000 undefined 7558.500104 558.50 undefined 7562.000000 undefined 7558.500203 558.50 undefined 7562.000000 undefined 7558.500101 558.50 undefined 7562.000000 undefined 7558.500107 558.50 undefined 7562.000000 undefined 7558.500102 558.50 undefined 7562.000000 undefined 7558.400000 558.40 undefined 7562.000000 undefined 7558.500204 558.50 undefined 7562.000000 undefined 7558.500201 558.50 undefined 7562.000000 undefined 7558.500103 558.50 undefined 7562.000000 undefined 7558.500300 558.50 undefined 7562.000000 undefined 7558.900000 558.90 undefined 7562.000000 undefined 7558.800000 558.80 undefined 7562.000000 undefined 7558.600100 558.60 undefined 7562.000000 undefined 7558.700000 558.70 undefined 7562.000000 undefined 7554.210000 554.21 Isabella Res. 7554.220000 Kernville 7557.100002 557.10 undefined 7562.000000 undefined 7557.100001 557.10 undefined 7562.000000 undefined 7557.300000 557.30 undefined 7562.000000 undefined 7558.600203 558.60 undefined 7562.000000 undefined 7558.600201 558.60 undefined 7562.000000 undefined 7558.600202 558.60 undefined 7562.000000 undefined 7557.200103 557.20 undefined 7562.000000 undefined 7557.200101 557.20 undefined 7562.000000 undefined 7557.200102 557.20 undefined 7562.000000 undefined 7557.200200 557.20 undefined 7562.000000 undefined -------------------------------------------------------------------------------------------------------- Notes on Table 4: 0. Swrcbnum21 (aka 'hydrologic basin code', 'hsa number', etc) is SWRCB's index to USEPA water quality reporting. 1. The listed Cdfnum22 codes contain a prefix of 1 digit and a suffix of 4 digits to Swrcbnum21 codes to account for Hydrologic Region and Regional Water Board coding differences and to account for subdivision of watersheds at Level 4 (HSA) into Levels 5 and 6 (SPWS and PWS). 2. DWR does not generally recognize lake or reservoir shorelines as 'watershed' units in SWRCB coding 3. Several SWRCB codes in the Central Valley were changed by DWR under the above MOU at Calwater version 2.0 and reinserted by SWRCB at version 2.1. 4. Some codes were added to the 1986 SWRCB set by CDF and DWR during the production of Calwater 2.2 5. The majority of code differences occur in the Central Valley floor (SWRCB's 500-series coding). 6. DWR-alternate names for watersheds at the Hydrologic Unit (HU) and Hydrologic Area (HA) Level are not shown here. At the HU Level, DWR effected 6 HU name changes to the existing set of 31 SWRCB HU names. At the HA Level, differences between SWRCB and DWR names involve either a DWR name entry for an undefined SWRCB watershed or a change of an existing SWRCB HA name. All coding and naming is in the Calwater 2.2.1 polygon attribute table "calw221.pat". See: Operating Understanding Between the State Water Resources Control Board and the Department of Water Resources Regarding Basin Planning Boundaries (1976) and Memorandum of Understanding on the Use and Maintenance of the California Watershed Map (state and federal signatory agencies, 1998 - 2000) -------------------------------------------------------------------------------------------------------- State Watershed Coding All watershed polygons defined by Calwater 2.2.1 within the State of California boundary are named and coded. Portions of watersheds physically extending beyond the State boundary are not mapped by Calwater 2.2.1 and are explicity depicted as such on the map. In Calwater 2.2.1 all ten of the State of California's Hydrologic Regions are completely subdivided into a total of 190 Hydrologic Units (there are only 185 Hydrologic Unit names - see Logical Consistency Report). However, not all Hydrologic Units are subdivided into Hydrologic Areas, not all Hydrologic Areas are subdivided into Hydrologic Sub-Areas, nor are subdivisions complete for the entire State at the Super-Planning and Planning Watershed levels. Some PWS watersheds (Level 6) exhibit 'skipping' of upper Levels in their coding. Completeness of coding at the Hydrologic Unit (HU) Level is described in detail below. -- Completeness Report on Calwater 2.2.1 State of California Hydrologic Unit (HU) Coding Summary: Total Cases: 20 Descriptive categories: 1) HUs not divided into Hydrologic Areas (HA) nor Hydrologic Sub-Areas (HSA) by SWRCB on Hydrologic Basin Planning Area (HBPA) Maps. 2) Undivided HUs from (1) later subdivided by CDF and/or DWR at Super-Planning Watershed (SPWS) or Planning Watershed (PWS) Levels (5 and 6, respectively). For this item and (1) above, the California Department of Fish and Game (DFG) entered "undefined" as value in appropriate name fields. 3) Boundary, name, and code modifications after 1986 revision of HBPA Maps. 4) New name and/or code introductions by CDF and/or DWR into SWRCB codeset at Calwater version 2.2 Confirmation with local Regional Water Quality Control Board staff is recommended for all cases. ===== Case 1: RBU 4401; PITAS POINT HU; outside of CDF Calwater scope; CDF did not subdivide at SPWS (Level 5) but did subdivide at PWS (Level 6). Two undocumented names: Madriano Canyon, Padre Juan Canyon DFG entered "undefined" for HANAME, HSANAME, SPWSNAME ===== Case 2: RBU 4407; undocumented boundary change, HU name and HU code: BUENAVENTURA HU; boundaries differ from SWRCB LA HBPA Map (1986); "Buenaventura" name not found in Map legend. ===== Case 3: RBU 4410; undocumented boundary change, name, and code; OXNARD HU; reconfigured from existing Oxnard Plain HA (403.10) and Oxnard HSA (403.11) and Pleasant Valley HSA (403.12) "OXNARD HU" not found on SWRCB LA HBPA Map (1986). ===== Case 4: RBU 3313; SAN ANTONIO HU; Not subdivided into HA or HSA by SWRCB on Central Coast HBPA Map (1986). Subdivided, coded, and named by CDF into SPWS and PWS. DFG entered "undefined" for HANAME, HSANAME ===== Case 5: RBU 3308; SANTA LUCIA HU; Not subdivided into HA or HSA by SWRCB on Central Coast HBPA Map (1986). Subdivided, coded, and named by CDF into SPWS and PWS. DFG entered "undefined" for HANAME, HSANAME ===== Case 6: RBU 3307; CARMEL RIVER HU; Not subdivided into HA or HSA by SWRCB on Central Coast HBPA Map (1986). Subdivided, coded, and named by CDF into SPWS and PWS. DFG entered "undefined" for HANAME, HSANAME ===== Case 7: RBU 3306; BOLSA NUEVA HU; Not subdivided into HA or HSA by SWRCB on Central Coast HBPA Map (1986). CDF did not subdivide at SPWS (Level 5) but did subdivide and name at PWS, (Level 6). DFG entered "undefined" for HANAME, HSANAME, SPWSNAME ===== Case 8: RBU 1110; EUREKA PLAIN HU (Humboldt Bay & tributaries); Not subdivided into HA or HSA by SWRCB on North Coast HBPA Map (1986). Subdivided, coded, and named by CDF into SPWS and PWS. DFG entered "undefined" for HANAME, HSANAME ===== Case 9: RBU 1101; WINCHUCK RIVER HU (Oregon Border); Not subdivided into HA or HSA by SWRCB on North Coast HBPA Map (1986). CDF did not subdivide at SPWS (Level 5) but did subdivide and name at PWS, (Level 6). DFG entered "undefined" for HANAME, HSANAME, SPWSNAME ===== Case 10: RBU 8642; COWHEAD LAKE HU; RBU 8640; DUCK FLAT HU; Not subdivided into HA or HSA by SWRCB on North Lahontan HBPA Map (1986). CDF did not subdivide at SPWS (Level 5) but did subdivide and name at PWS, (Level 6). DFG entered "undefined" for HANAME, HSANAME, SPWSNAME ===== Case 11: RBU 8636; LITTLE TRUCKEE RIVER HU; RBU 8638; MADELINE PLAINS HU; RBU 8637; SMOKE CREEK HU; Not subdivided into HA or HSA by SWRCB on North Lahontan HBPA Map (1986). Subdivided, coded, and named by CDF into SPWS and PWS. DFG entered "undefined" for HANAME, HSANAME ===== Case 12: RBU 5510; SACRAMENTO DELTA HU (north portion of Legal Delta); RBU 6544; SAN JOAQUIN DELTA HU (south portion of Legal Delta) Not subdivided into HA or HSA by SWRCB on Sacramento and San Joaquin HBPA Maps (1986). Not subdivided by CDF. DFG entered "undefined" for HANAME, HSANAME, SPWSNAME, PWSNAME See "Legal Delta" language in California Water Code. ===== Case 13: RBU 6538; MARIPOSA HU RBU 6543; NORTH DIABLO RANGE HU; Not subdivided into HA or HSA by SWRCB on San Joaquin HBPA Map (1986). Subdivided, coded, and named by CDF into SPWS and PWS. DFG entered "undefined" for HANAME, HSANAME c. Add note to Calwater 2.2.1 metadata ===== Case 14: RBU 6571; LOWER CALAVERAS HU; Undocumented boundary, code, and name. Polygon size is equivalent to a PWS. "LOWER CALAVERAS HU" does not appear on San Joaquin HBPA Map (1986). Apparently is a reconfiguration of UPPER CALAVERAS HU (533.00), NORTH VALLEY FLOOR HU (531.00), and Lower Calaveras HA (531.30). DFG Entered "undefined" for HANAME, HSANAME, SPWSNAME, PWSNAME Need to reconcile actual, valid Lower Calaveras HA (IDNUM 6531.30000) ===== Case 15: RBU 9601; MONO HU; RBU 9604; FISH LAKE HU; RBU 9605; DEEP SPRINGS HU; Not subdivided into HA or HSA by SWRCB on South Lahontan HBPA Map (1986). Subdivided, coded, and named by CDF into SPWS and PWS. DFG entered "undefined" for HANAME, HSANAME ===== Case 16: RBU 9623; UPPER CACTUS HU; Not subdivided into HA or HSA by SWRCB on North Lahontan HBPA Map (1986). CDF did not subdivide at SPWS (Level 5) but did subdivide and name at PWS, (Level 6). DFG entered "undefined" for HANAME, HSANAME, SPWSNAME ===== Case 17: RBU 9610,11,12,14,16,17,18,19,27,29; PAHRUMP HU and 9 Others: Not subdivided into HA or HSA by SWRCB on Sacramento and San Joaquin HBPA Maps (1986). Not subdivided by CDF. DFG entered "undefined" for HANAME, HSANAME, SPWSNAME, PWSNAME ===== Case 18: RBU 4912 SAN DIEGO BAY HU; Undocumented designation, name, and code. "SAN DIEGO HU" not found on SWRCB SD HBPA map (1986). Not coded or named by DWR nor subdivided by CDF. Need to obtain identification code and official name from San Diego Board. DFG entered "undefined" for HANAME, HSANAME, SPWSNAME, PWSNAME See similar waterbody designations within Calwater codeset ===== Case 19: RBU 10701, 02-thru07; 11,12,14,16,18,20,21,24 thru 28; LUCERNE LAKE and 18 Others: Hydrologic Region 10 (Regional Water Quality Control Board (7), Colorado River) Not subdivided into HA or HSA by SWRCB on Colorado River HBPA Map (1986). Not coded or named by DWR and not subdivided by CDF. DFG Entered "undefined" for HANAME, HSANAME, SPWSNAME, PWSNAME ===== Case 20: RBU 4801; SANTA ANA RIVER HU; Lower Santa Ana HA; Newport Bay HSA (801.14) Undocumented boundary, name, and code. "Newport Bay HSA 801.14" not found on Santa Ana HBPA Map (1986). Obtain boundary, identification code and official name from Santa Ana Board. DFG entered "undefined" for SPWSNAME, PWSNAME See similar waterbody designations within codeset ===== end Completeness Report on Calwater 2.2.1 Hydrologic Unit (HU) coding by pveisze@dfg.ca.gov 20040505 Note: completeness of coding at the Hydrologic Area (HA) and Hydrologic Sub-Area (HSA) is not provided at this version of the metadata, but would be similar in characteristics to the HU Cases described above. Federal Hydrologic Unit Codes (HUC) All of the federal Hydrologic Unit Codes (HUC) intersected by Calwater 2.2.1 designations are cross referenced. However, not all HUC SubBasins (Huc_8, formerly known as Cataloging Unit (CU)) ascribed to federal Hydrologic Region 18 (California) have a majority of their area within the State boundary. For example, in the upper Klamath River Basin, SubBasins 18010201, 18010202, and 18010203 fall entirely within the State of Oregon. Other SubBasins in HUC Hydrologic Regions 15, 16, and 17 (portions of Arizona, Nevada, and Oregon, respectively) also have partial overlap within California (see Supplemental Information, Table 3). SubBasin 18070203 (SEAL_BEACH) constitutes the only exception to the rule of listing the majority overlap (80%) of a SubBasin with a Calwater watershed (in the field "HUC_8"). The actual majority overlap of the East Coastal Plain (SWRCBNUM22 = 801.11) is with the NEWPORT_BAY (SubBasin 18070204). This exception enables all other instances of names of California SubBasins to be contained in a single field "HUC_8_NAME". Fields "HUC_8_ALT2" and "HUC_8_ALT3" indicate minority overlap SubBasins and provide only the numeric SubBasin code. Watershed boundaries were checked by several reviewers within the California Interagency Watershed Mapping Committee. Reference sources included USGS 7.5' quads, USGS Digital Elevation Models, USGS Hydrologic Unit Maps, and State of California Regional Water Quality Control Board (RWQCB) Hydrologic Basin Planning Area Maps. A quanitative analysis of conformance to federal watershed delineation standards is in progress. not applicable U.S. Geological Survey map Over 2800 USGS quads were the basis for digitization of watershed boundaries for Calwater version 2.2, as available for the State of California, circa 1993. http://www.usgs.gov 24000 paper maps publication date USGS 7.5' Topographic Maps Digitization base for watershed boundaries and names for Calwater 2.2.1, following initial designations from SWRCB Hydrologic Basin Planning Area (HBPA) Maps. State of California Regional Water Quality Control Boards California State Water Resources Control Board (SWRCB) 1986 map State of California Regional Water Quality Control Board Hydrologic Basin Planning Area Maps Sacramento, California State Water Resources Control Board, Surveillance and Monitoring Section 12 maps in the series; one for each of 9 Regional Water Quality Control Boards (3 maps cover the Central Valley Region (5)); See HBPA field in Entity Attribute section. At the 1986 Revision, watershed names and boundaries shown on the maps are in accordance with and agreement with the California Department of Water Resources and the U.S. Geological Survey. 500000 paper maps 197304 197607 198608 publication date State of California Regional Water Quality Control Board Hydrologic Basin Planning Area Maps 12 maps in the series (last revised in 1986); were initial basis for digitizing Calwater watershed boundaries, names, and codes in versions 2.2 (September, 1999) and prior. U.S. Geological Survey 1994 1 vector digital data Hydrologic Unit Maps of the Conterminous United States Reston, Virginia U.S. Geological Survey http://water.usgs.gov/GIS/metadata/usgswrd/huc250k.html 250000 digital vector data 1994 USGS Hydrologic Unit Maps Reference digital data layer for federal Hydrologic Unit Codes contained in cross-reference fields "HUC_8" etc in Calwater 2.2.1. Calwater version 1.2 was completed in 1995 by Tierra Data Systems, California, under contract to the California Department of Forestry and Fire Protection (CDF). Linework was captured by overlaying SWRCB Hydrologic Basin Planning Area Maps on 1:24,000-scale, 7.5' USGS quads and then redrawing and digitizing lines to match watershed boundaries interpreted from elevation contours. To the four existing SWRCB watershed levels: Hydrologic Regions (Level 1), Hydrologic Units (Level 2), Hydrologic Areas (Level 3), and Hydrologic Sub-Areas (Level 4), CDF created two additional levels to reference their Timber Harvest Plan tracking and other landscape analyses: the Super Planning Watershed (SPWS, Level 5) and the Planning Watersheds (PWS, Level 6). 1995 Tierra Data Systems, California Jim Kellogg Contractor to the California Department of Forestry and Fire Protection (CDF), 1993/4. In 1997, the California Department of Water Resources (DWR) initiated adoption of only the first four Levels of Calwater 1.2 for maps associated with their California Water Plan updates of 1998. In addition, DWR worked with the Stephen P. Teale Data Center (Teale) GIS Solutions Group to integrate so-called 'groundwater lines' which define the perimeters of the Central Valley and the Salinas Valley. DWR and Teale also conducted extensive quality assurance on watershed delineation and coding. CDF and DWR also worked with Teale to revise Calwater with inputs from the USDA Forest Service, principally the Klamath, Lassen, Mendocino, Shasta-Trinity, and Six Rivers National Forests. Throughout the integration of various linework sources, Teale, DWR, and DFG performed checks of watershed delineation accuracy (against USGS quads and USGS Digital Elevation Models). Code and watershed name uniqueness was checked by frequency tabulation. 1997 - 1999 State of California Stephen P. Teale Data Center GIS Solutions Group After July 1, 2001 contact California Resources Agency, California Spatial Information Library, Sacramento: www.gis.ca.gov Calwater 2.2 - to - HUC Crosswalk (State - Federal Hydrologic Code Cross Reference) The cross-reference of State of California watershed codes in Calwater 2.2 to federal Hydrologic Unit Codes (HUC) was developed with the following rules: For a given [state] Calwater watershed, overlapping [federal] Hydrologic Unit Codes (at the 8-digit SubBasin (formerly Cataloging Unit [CU] level) are listed up to a maximum of 80% of the Calwater watershed OR three SubBasins, whichever comes first. For example: Where there are two SubBasin codes (HUC_8_ALT2, HUC_8_ALT3) listed for a given Calwater code (only 17 watersheds fit this criterion), the largest overlapping SubBasin alone constitutes less than 80% of the Calwater watershed, but combining a second SubBasin then provides overlap of at least 80% of the Calwater watershed. Where there are three SubBasin codes listed for a given Calwater watershed (only 1 watershed fits this criterion, the East Coastal Plain, SWRCBNUM21 = 801.11, Orange County), The largest 2 SubBasins together overlap less than 80% of the Calwater watershed; combining a third SubBasin code produces additional overlap. 1999 State of California Stephen P. Teale Data Center GIS Solutions Group Calwater 2.2.1 Process Step Summary (May 28, 2004 Update, "calw221") 1. Datum conversion: NAD 27 to NAD 83 (Teale Albers Conical Equal-Area Projection) 2. Watershed Name Fields Re-computation; values adjusted 3. ACRES Field Re-computation after re-projection 4. Dataset Identifier changed to "calw221" 5. Added 2 new fields, renamed 9 existing fields 6. Renamed federal HUC (Hydrologic Unit Code) cross-reference fields in conformance with Watershed Boundary Dataset (WBD) (values unchanged). 7. Corrected 1 HUC name ommission and renamed 1 CDFPWSNAME. 8. Added linework to facilitate dissolve to federal SubBasins on field HUC_8 9. Spelling corrections on HUNAME ---- 1. Datum conversion: ArcInfo coverage calw22 (also known as CALW22A) was reprojected from its original datum / projection to the Teale Albers Conical Equal-Area projection, North American Datum of 83 (NAD 83). The ArcInfo PROJECT command was used with parameters appended below. Polygon attribute table fields "AREA" and "PERIMETER" were automatically updated after the BUILD command. 2. Watershed Name Fields: There are several known instances of replicated watershed names at various Levels in the Calwater coding system, a legacy of State and Regional Water Quality Control Board maps (see SWRCB MOU with DWR and USGS in 1986). The version of Calwater 2.2 originally released by the Teale GIS Solutions Group (September 1999) indicated this condition with entries of the form "SAME AS HUNAME", "SAME AS HANAME", etc in watershed name fields. This was problematic for users dissolving polygon boundaries at various Levels. In this 2004 version "calw221" watershed names as published by SWRCB were restored to their appropriate fields. A name value of "undefined" was entered where a given watershed polygon was not divided at a particular level. Users are advised to rely on watershed codes rather than names (with noted exceptions, see Logical Consistency Report) as the most consistent, unique watershed identifiers at all levels. 3. ACRES Field: The polygon attribute table field "ACRES" was manually re-computed after reprojection. There are cases where watersheds polygons are fragmented by State, County and other boundaries. Watershed acreage totals originally replicated in each of a watershed's component polygon records were replaced by values specific to the individual polygons. This avoids the risk of double-counting when summing watershed areas. Datum Conversion Parameters for the PROJECT Command INPUT PROJECTION ALBERS SPHEROID CLARKE1866 DATUM NAD27 UNITS METERS PARAMETERS 34 00 00 40 30 00 -120 00 00 00 00 00 0 -4000000 OUTPUT PROJECTION ALBERS SPHEROID GRS80 DATUM NAD83 UNITS METERS PARAMETERS 34 00 00 40 30 00 -120 00 00 00 00 00 0 -4000000 END 4. Dataset identifier: After the above steps, the output coverage was renamed from "calw22" to "calw221". 5. Added 2 new fields, renamed 9 existing fields: a. Create new field "CALWNUM"; Explanation: This field is the primary key for Calwater 2.2.1; legacy coding from Calwater 2.2 is preserved in field "CDFNUM22"; The CALWNUM field will contain coding changes at future versions. a.2. Create new field "SWRCBNUM21" Explanation: This field matches the watershed codes published in the State Water Resources Control Board's Hydrologic Basin Planning Area maps (12 maps in the series, last revised 1986), with some exceptions as noted in Completeness Report of this metadata. Identifies SWRCB as originator of the codes (excluding exceptions) at Calwater version 2.2. b. Copy IDNUM to CALWNUM; This action preserved coding from Calwater version 2.2. c. Rename IDNUM to CDFNUM22; Identifies CDF as the originator of the codes at Calwater version 2.2. d. Create new field "DWRNUM20"; Identifies DWR as the originator of the codes at Calwater version 2.0. Note: DWRNUM20 coding is incomplete for differentiation of some DWR-named watersheds at the HA and HSA levels. e. Copy IDNUM_20 to DWRNUM20; This action preserved DWR coding from Calwater version 2.0. f. Select DWRNUM20 = null; Calculate DWRNUM20 = CALWNUM; Explanation: DWR watershed identifiers differ from those of SWRCB; where different, the values are preserved; where the DWR and SWRCB agree on the values, the field values are now actually equal. See Calwater MOU of 1998. g. Rename HUNAME_20 to DWRHUNAME Explanation: This field has a new name to identify the data source h. Rename HANAME_20 to DWRHANAME; Explanation: This field has a new name to identify the data source i. Rename HSANAME_20 to DWRHSANAME; Explanation: This field has a new name to identify the data source j. Rename SPWSNAME to CDFSPWNAME; Explanation: This field has a new name to identify the data source k. Rename PWSNAME to CDFPWSNAME; Explanation: This field has a new name to identify the data source 6. Renamed federal HUC fields: At Calwater version 2.2.1, the "CU" field (formerly representing the Cataloging Unit level of HUC, was renamed to "Huc_8", now representing the "SubBasin" level, per FGDC Proposal, Version 1.0: "Federal Standards for Delineation of Hydrologic Unit Boundaries" (Section 7.2.1, March 1, 2002). Associated fields formerly named "CUNAME", "CU2", and "CU3" were changed to "HUC_8_NAME", "HUC_8_ALT2", and "HUC_8_ALT3", respectively. See Cross-Reference Section of this metadata. 7. Corrected HUC_8 name ommission "SEAL BEACH"; added CDFPWSNAME "Sterling Mountain". 8. Added linework to facilitate dissolve to federal SubBasins on field HUC_8 or HUC_8_NAME: a.) 5/25/2004: Downloaded federal watershed boundaries from ftp://water.usgs.gov/pub/dsdl/huc250.e00.gz b.) 5/27/2004: Using ArcInfo / ArcEdit / EditFeature Poly, selected major cases of State watershed polygons that overlapped multiple federal SubBasins (mostly reservoir outlines). c.) Issued the ArcEdit SPLIT command for each selected case, and screen-digitized a line following associated USGS "huc250" (see Cross References) boundary. d.) In the Arc Attribute Table, calculated item LEVEL = 0 for each added 'split' line. e.) Edited the HUC_8 and HUC_8_NAME polygon attributes to identify each federal SubBasin overlapping the subject State watershed f.) Recomputed the ACRES field on each polygon resulting from SPLIT command (using the ArcView 3.3-bundled script "View.CalculateAcreage" (calcacre.ave)) g.) 5/27/04: issued final BUILD commands with POLY and LINE options. 9. Spelling corrections on HUNAME: a.) Removed extra blank in "SANTA MARIA" value for HUNAME which was causing improper sort order b.) Corrected spelling from "BOLSA NEUVA" to "BOLSA NUEVA". 2004 GIS Research Manager California Department of Fish and Game mailing and physical address

State of California

Department of Fish and Game

1807 13th Street, Suite 201

Sacramento California 95814 USA (916) 323-1667 (916) 323-1431 pveisze@dfg.ca.gov geodata@dfg.ca.gov Vector Simple FALSE 11 TRUE FALSE coordinate pair 0.002048 0.002048 meters North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 GCS_North_American_1983 NAD_1983_StatePlane_California_II_FIPS_0402_Feet Explicit elevation coordinate included with horizontal coordinates 0.000010 GIS_REST.TPW.BND_NPDES_WTRSHD arc attribute table (boundary level classification) Feature Class 11 Shape Feature geometry. ESRI Coordinates defining the features. Shape Geometry 4 0 0 Watershed Watershed String 25 0 0 Region Region String 20 0 0 OBJECTID OBJECTID OID 4 10 0 Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape.STArea() Shape.STArea() Double 0 0 0 Shape.STLength() Shape.STLength() Double 0 0 0 calw221.pat polygon attribute table (watershed codes and names) FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. AREA Area of feature in internal units squared. ESRI Positive real numbers that are automatically generated. PERIMETER Perimeter of feature in internal units. ESRI Positive real numbers that are automatically generated. CALW221# Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. CALW221-ID User-defined feature number. ESRI CALWNUM Unique identifier (type=character) of watershed polygon; concatenates HR+RB+HU+"."+HA+HSA+SPWS+PWS HR (Calif. Dept. Water Resources); RB (State and Regional Water Boards); SPWS, PWS (Dept. Forestry & Fire Protection) Unique (with exceptions as noted); not all watershed levels are consistently subdivided; see Data Quality element SWRCBNUM21 Unique identifier (type=character) of watershed polygon as published by SWRCB on HBPA Map Series (revised 1986); concatenates RB+HU+"."+HA+HSA State and Regional Water Quality Control Boards Known changes by CDF and DWR in SWRCB codeset of 1986; see Completeness Report in this metadata; New codes added, boundaries reconfigured; see also codes for SPWS and PWS HRC Hydrologic Region Code California Department of Water Resources NC North Coast California Department of Water Resources (DWR) SF San Francisco Bay California Department of Water Resources (DWR) CC Central Coast California Department of Water Resources (DWR) SC South Coast California Department of Water Resources (DWR) SR Sacramento River California Department of Water Resources (DWR) SJ San Joaquin River California Department of Water Resources (DWR) TL Tulare Lake California Department of Water Resources (DWR) NL North Lahontan California Department of Water Resources (DWR) SL South Lahontan California Department of Water Resources (DWR) CR Colorado River California Department of Water Resources (DWR) Unique 2-character code; Acronym for each of California's ten Hydrologic Region names HBPA Hydrologic Basin Planning Area SWRCB and Regional Water Quality Control Boards NC North Coast State Water Resources Control Board and Regional Water Quality Control Board SF San Francisco Bay State Water Resources Control Board and Regional Water Quality Control Board CC Central Coast State Water Resources Control Board and Regional Water Quality Control Board LA Los Angeles State Water Resources Control Board and Regional Water Quality Control Board SB Sacramento Basin State Water Resources Control Board and Regional Water Quality Control Board SJ San Joaquin State Water Resources Control Board and Regional Water Quality Control Board TL Tulare Lake State Water Resources Control Board and Regional Water Quality Control Board NL North Lahontan State Water Resources Control Board and Regional Water Quality Control Board SL South Lahontan State Water Resources Control Board and Regional Water Quality Control Board CR Colorado River State Water Resources Control Board and Regional Water Quality Control Board SA Santa Ana State Water Resources Control Board and Regional Water Quality Control Board SD San Diego State Water Resources Control Board and Regional Water Quality Control Board Unique 2-character code; Acronym for each of 12 Regional Water Quality Control Board names RBU Concatenates HR+RB+HU into single integer RBUA Concatenates HR+RB+HU+HA RBUAS Concatenates HR+RB+HU+HA+HSA RBUASP Concatenates HR+RB+HU+HA+HSA+SPWS RBUASPW Concatenates HR+RB+HU+HA+HSA+SPWS+PWS HR Hydrologic Region (as a number) California Departmento of Water Resources 1 North Coast California Department of Water Resources (DWR) 2 San Francisco Bay California Department of Water Resources (DWR) 3 Central Coast California Department of Water Resources (DWR) 4 South Coast California Department of Water Resources (DWR) 5 Sacramento River California Department of Water Resources (DWR) 6 San Joaquin River California Department of Water Resources (DWR) 7 Tulare Lake California Department of Water Resources (DWR) 8 North Lahontan California Department of Water Resources (DWR) 9 South Lahontan California Department of Water Resources (DWR) 10 Colorado River California Department of Water Resources (DWR) Unique numeric code; Enumerates California's ten Hydrologic Regions RB Region Water Quality Control Board number State Water Resources Control Board; see also Supplemental Information element 1 North Coast Regional Water Quality Control Board 2 San Francisco Bay Regional Water Quality Control Board 3 Central Coast Regional Water Quality Control Board 4 Los Angeles Regional Water Quality Control Board 5 Central Valley (spans DWR HRs 5, 6, and 7; HBPAs SB, SJ, and TL) Regional Water Quality Control Board 6 San Joaquin Regional Water Quality Control Board 7 Tulare Lake Regional Water Quality Control Board 8 North Lahontan Regional Water Quality Control Board 9 South Lahontan Regional Water Quality Control Board Unique numeric code; Enumerates each of California's nine Regional Water Quality Control Boards (RWQCB); Note: RB 5 maintains three subregional offices equivalent to DWR HRs HU Hydrologic Unit State Water Resources Control Board HA Hydrologic Area State Water Resources Control Board Calwater 2.2.1 Interagency Watershed Mapping Committee HSA Hydrologic Sub-Area State Water Resources Control Board SPWS Super-Planning Watershed California Department of Forestry and Fire Protection PWS Planning Watershed California Department of Forestry and Fire Protection HRNAME Hydrologic Region Name California Department of Water Resources RBNAME Regional Water Quality Control Board Name State Water Resources Control Board HBPANAME Hydrologic Basin Planning Area Name State Water Resources Control Board Hydrologic Basin Planning Area Regional Water Quality Control Boards HUNAME Hydrologic Unit Name State Water Resources Control Board HANAME Hydrologic Area Name State Water Resources Control Board HSANAME Hydrologic Sub-Area Name State Water Resources Control Board CDFSPWNAME CDF Super-Planning Watershed Name California Department of Forestry and Fire Protection CDFPWSNAME CDF Planning Watershed Name California Department of Forestry and Fire Protection ACRES Acreage of watershed polygon Computed from ArcInfo AREA field; Re-computed after reprojection and 'splits' of polygons due to boundary integration Rounded to nearest whole acre; Fragmented watersheds (watershed comprised of multiple polygons) must have their total area computed by summing area from each individual polygon HUC_8 SubBasin (USGS Hydrologic Unit Code, HUC) U.S. Geological Survey Water Supply Paper 2294, 1986); formerly known as Cataloging Unit (CU) Hydrologic Unit Code (Cataloging Unit) U.S. Geological Survey Water Supply Paper 2294 (1987) majority of overlap by federal Hydrologic Unit Code HUC_8_NAME SubBasin Name U.S. Geological Survey Water Supply Paper 2294, 1986) Hydrologic Unit Code (Cataloging Unit) U.S. Geological Survey HUC_8_ALT2 If populated, is an additional SubBasin that overlaps a State-designated watershed Teale GIS Solutions Group 22 known instances of SubBasin codes replicated due to 'split' watersheds (see Logical Consistency); Where populated, 2 or more federal SubBasins overlap a State watershed HUC_8_ALT3 If populated, is a 3rd SubBasin that overlaps a State-designated watershed Teale GIS Solutions Group Hydrologic Unit Code (Cataloging Unit) U.S. Geological Survey 6 known instances of SubBasin codes replicated due to 'split' watersheds (see Logical Consistency); Where populated, three federal SubBasins explicitly overlap one State watershed designation DWRNUM20 DWR Alternate watershed identifier California Department of Water Resources (DWR), Calwater version 2.0 Calwater 2.0 California Department of Water Resources Dissolve on this field to get version 2.0 boundaries DWRHUNAME DWR Alternate Hydrologic Unit Name DWR, Calwater 2.0 Calwater 2.0 California Department of Water Resources DWRHANAME DWR Alternate Hydrologic Area Name DWR, Calwater 2.0 Calwater 2.0 California Department of Water Resources DWRHSANAME DWR Alternate Hydrologic Sub-Area Name DWR, Calwater 2.0 Calwater 2.0 California Department of Water Resources CDFNUM22 CDF Unique identifier (character) of watershed polygon; concatenates HR+RB+HU+"."+HA+HSA+SPWS+PWS California Department of Forestry and Fire Protection (CDF) Codes and names are unique for each watershed polygon (except where noted in Supplemental Information and in Logical Consistency Report). Polygon attributes indicate varying levels in the State watershed hierarchy (RBU, RBUA, etc) and are provided for users to dissolve polygon boundaries to the desired level. Cross-references to federal watershed codes and names are also provided. The "LEVEL" attribute in the arc attribute table may also be used with graduated line weights to cartographically represent the hierarchy of watershed designations. State Water Resources Control Board, California Department of Water Resources, California Department of Forestry and Fire Protection, California Teale GIS Solutions Group, California Department of Fish and Game California Spatial Information Library (CaSIL) California Resources Agency Metadata Administrator mailing and physical address

California Spatial Information Library

900 N Street

Sacramento, CA 95814

Sacramento California 95814 USA (916) 653-1369 (916) 654-5829 metadata@gis.ca.gov Downloadable Data DISCLAIMER Neither the State of California Resources Agency, CaSIL nor its contributors shall be held liable for any improper or incorrect use of the information described and/or contained herein and assumes no responsibility for anyone's use of the information. [Full text of disclaimer is at http://gis.ca.gov/disclaimer.epl] E00 29.985 ESRI Shapefile ESRI Shapefile withheld Connect to www.gis.ca.gov; navigate to Frequently Accessed Data; select and download dataset "Calwater 2.2.1" none Contact California Resources Agency California Spatial Information Library (CaSIL) Familiarity with watershed concepts and ESRI Geographic Information System (GIS) software 20041118 20041118 California Department of Fish and Game GIS Research Manager GIS Service Center mailing and physical address

State of California

Department of Fish and Game

1807 13th Street, Suite 201

Sacramento California CA 95814 USA 916-323-1667 pveisze@dfg.ca.gov geodata@dfg.ca.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile en Version 6.2 (Build 9200) ; Esri ArcGIS 10.7.1.11595 NPDES Watersheds 1 -123.539334 -122.349289 38.915785 38.100928 The purpose of Calwater 2.2.1 is to standardize the boundary delineation, coding, and naming of California watersheds by government agencies. Calwater also cross-references watershed codes implemented by the California Department of Water Resources (DWR), the California State Water Resources Control Board (SWRCB) and Regional Water Quality Control Boards (RWQCB), as well as Hydrologic Unit Codes (HUC) published by the U.S. Geological Survey (USGS) for California and the nation. Standardized watershed delineations, codes, and names from both State and federal systems are used primarily to map, analyze, and document water resources and water quality information and regulations. Examples include water quality reporting to the U.S. Environmental Protection Agency by SWRCB and Timber Harvest Plan tracking by the California Department of Forestry and Fire Protection (CDF). Applications also include regional planning, environmental analysis, hydrology, wildlands research, soils, agriculture, and fish and wildlife habitat management. Calwater is also useful in geographic information systems (GIS) and for online data retrieval. Calwater 2.2.1 and versions to follow are intended to provide a comprehensive geographic frame of reference for the California landscape. <DIV STYLE="text-align:Left;"><DIV><P><SPAN>The California Interagency Watershed Map of 1999 (updated May 2004, "calw221") is the State of California's working definition of watershed boundaries. Previous Calwater versions (1.2 and 2.2) described California watersheds, beginning with the division of the State's 101 million acres into ten Hydrologic Regions (HR). Each HR is progressively subdivided into six smaller, nested levels: the Hydrologic Unit (HU, major rivers), Hydrologic Area (HA, major tributaries), Hydrologic Sub-Area (HSA), Super Planning Watershed (SPWS), and Planning Watershed (PWS). At the Planning Watershed (the most detailed level), where implemented, polygons range in size from approximately 3,000 to 10,000 acres. At all levels, a total of 7035 polygons represent the State's watersheds. The present version, Calwater 2.2.1, refines the watershed coding structure and documentation (database fields were added and some were renamed). There are significant watershed boundary, code, and name differences between Calwater versions 1.2 (1995), 2.0 (1998), and 2.2 (1999). The differences between versions 2.2 (1999) and 2.2.1 (2004) are attribute field names and some inserted lines that identify differences between State and federal watersheds. Calwater 2.2.1 most accurately delineates true watersheds in mountainous terrain. However, neither Calwater 2.2.1 nor any of its predecessors is a "pure" watershed map because administrative boundaries such as the State border were used to delineate watershed areas. Some of the boundaries, particularly in developed valley areas, also have legal and administrative purposes other than the representation of actual drainage divides. Examples include the so-called "Legal Delta" (California Water Code, Chapter 2, the Delta, Sec. 12220) and other district boundaries. Neither is Calwater a legal map document, as it does not represent State of California Regional Water Quality Control Board (RWQCB) jurisdictions, officiated by the State Water Resources Control Board (SWRCB) under California Water Code Section 13200. Calwater is a hybrid, a spatial cross-reference for use in local, State, and federal information communities. The California Resources Agency (CRA) Department of Forestry and Fire Protection (CDF) contracted with Tierra Data Systems for the original digital production in 1993, based on Hydrologic Basin Planning Maps published in hardcopy (SWRCB, 1986). The State of California Stephen P. Teale Data Center GIS Solutions Group (Teale) under the direction of the California Department of Water Resrouces (DWR) and CDF, finalized the current version in ESRI ArcInfo coverage format in 1999 with USDA Forest Service and RWQCB/SWRCB inputs. The CRA California Spatial Information Library (CaSIL) is the current distributor of the coverage in the Teale Albers Conical Equal-Area projection, North American Datum of 1983. The California Department of Fish and Game (DFG) authored Calwater attribution design and documentation culminating in May 2004 with this Federal Geographic Data Committee (FGDC-STD-001-1998) standard metadata.</SPAN></P></DIV></DIV> California Interagency Watershed Mapping Committee: California Department of Water Resources (DWR), California Department of Forestry and Fire Protection (CDF), California Department of Fish and Game (DFG), California State Water Resources Control Board (SWRCB), USDA Forest Service (USFS) Pacific Southwest Region (R5), USDA Natural Resources Conservation Service (NRCS), U.S. Geologic Survey (USGS), USDI Bureau of Reclamation (USBR), USDI Bureau of Land Management (BLM), U.S. Environmental Protection Agency (USEPA) Region IX, Stephen P. Teale Data Center (Teale GIS Solutions Group). watershed boundaries water resources inlandWaters environment boundaries watersheds hydrologic unit codes water quality reporting waterbody beneficial use impaired waterbodies <DIV STYLE="text-align:Left;"><DIV><P><SPAN>Cite Originator as California Interagency Watershed Mapping Committee; include complete metadata in redistributions</SPAN></P></DIV></DIV> ISO 19115 Geographic Information - Metadata DIS_ESRI1.0 dataset 002 withheld Local Area Network Personal GeoDatabase Feature Class Feature Class NAD_1983_StatePlane_California_II_FIPS_0402_Feet EPSG 5.3(9.0.0) 11 20200403 14224900 20200403 14224900 BND_NPDES_WTRSHD 002 6123656.164689 6461159.798689 1802243.806023 2095528.129523 1 Projected GCS_North_American_1983 Linear Unit: Foot_US (0.304801) NAD_1983_StatePlane_California_II_FIPS_0402_Feet <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/10.7'><WKT>PROJCS[&quot;NAD_1983_StatePlane_California_II_FIPS_0402_Feet&quot;,GEOGCS[&quot;GCS_North_American_1983&quot;,DATUM[&quot;D_North_American_1983&quot;,SPHEROID[&quot;GRS_1980&quot;,6378137.0,298.257222101]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433]],PROJECTION[&quot;Lambert_Conformal_Conic&quot;],PARAMETER[&quot;False_Easting&quot;,6561666.666666666],PARAMETER[&quot;False_Northing&quot;,1640416.666666667],PARAMETER[&quot;Central_Meridian&quot;,-122.0],PARAMETER[&quot;Standard_Parallel_1&quot;,38.33333333333334],PARAMETER[&quot;Standard_Parallel_2&quot;,39.83333333333334],PARAMETER[&quot;Latitude_Of_Origin&quot;,37.66666666666666],UNIT[&quot;Foot_US&quot;,0.3048006096012192],AUTHORITY[&quot;EPSG&quot;,2226]]</WKT><XOrigin>-115211799.99981064</XOrigin><YOrigin>-93821499.999977306</YOrigin><XYScale>8000.0000000000018</XYScale><ZOrigin>0</ZOrigin><ZScale>1</ZScale><MOrigin>0</MOrigin><MScale>1</MScale><XYTolerance>0.0009999999999999998</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>102642</WKID><LatestWKID>2226</LatestWKID></ProjectedCoordinateSystem> 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