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Service Description: <div style='text-align:Left;'><div><div><p><span>The dataset represents the Sonoma County </span><span style='font-style:italic;font-weight:bold;'>FEMA DFIRM Flood Hazard Zones </span><span>effective </span><span style='font-weight:bold;'>March 7, 2017</span><span>, whereby BFE and FHA modifications occurred along the coastline of the unincorporated Sonoma County, California. The BFE and FHA modifications flood study and mapping project is referred to as the </span><span style='font-style:italic;font-weight:bold;'>Open Pacific Coast (OPC) Study</span><span>. The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the State Plane projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000.</span></p></div></div></div>

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• FEMA DFIRM Flood Hazard Zones (0)

Description: The dataset represents the Sonoma County FEMA DFIRM Flood Hazard Zones effective March 7, 2017, whereby BFE and FHA modifications occurred along the coastline of the unincorporated Sonoma County, California. The BFE and FHA modifications flood study and mapping project is referred to as the Open Pacific Coast (OPC) Study. The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the State Plane projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000.

Copyright Text: Federal Emergency Management Agency (FEMA)

Spatial Reference: 102642  (2226)  LatestVCSWkid(0)


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Spatial Reference: 102642  (2226)  LatestVCSWkid(0)

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Spatial Reference: 102642  (2226)  LatestVCSWkid(0)

Units: esriFeet

Document Info:

Title: FEMA DFIRM Flood Hazard Zones
Author:
Comments: The dataset represents the Sonoma County FEMA DFIRM Flood Hazard Zones effective March 7, 2017, whereby BFE and FHA modifications occurred along the coastline of the unincorporated Sonoma County, California. The BFE and FHA modifications flood study and mapping project is referred to as the Open Pacific Coast (OPC) Study. The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the State Plane projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000.
Subject: The FIRM is the basis for floodplain management, mitigation, and insurance activities for the National Flood Insurance Program (NFIP). Insurance applications include enforcement of the mandatory purchase requirement of the Flood Disaster Protection Act, which "... requires the purchase of flood insurance by property owners who are being assisted by Federal programs or by Federally supervised, regulated or insured agencies or institutions in the acquisition or improvement of land facilities located or to be located in identified areas having special flood hazards," Section 2 (b) (4) of the Flood Disaster Protection Act of 1973. In addition to the identification of Special Flood Hazard Areas (SFHAs), the risk zones shown on the FIRMs are the basis for the establishment of premium rates for flood coverage offered through the NFIP. The DFIRM Database presents the flood risk information depicted on the FIRM in a digital format suitable for use in electronic mapping applications. The DFIRM database is a subset of the Digital FIS database that serves to archive the information collected during the FIS. Static copy for Onsite Waste Treatment Systems (OWTS).
Category:
Keywords: elevation,DFIRM,COUNTY SONOMA,FEMA Flood Hazard Zone,inlandWaters,Base Flood Elevation,Special Flood Hazard Area,hydrology,STATE CA,structure,Coastal Flooding,transportation,NFIP,REGION 9,COMMUNITY SONOMA COUNTY AND INCORPORATED AREAS,SFHA,Digital Flood Insurance Rate Map,Riverine Flooding,FEMA-CID 06097C,Floodway,DFIRM Database,FIRM,COUNTY-FIPS 06097,environment,Flood Insurance Rate Map,OWTS
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