{ "culture": "en-US", "name": "Lidar_HydroFlat_BareEarth_HS_2022", "guid": "", "catalogPath": "", "snippet": "The hillshade raster is calculated from the DTM and simulates how light and shadow would fall on the terrain creating a shaded relief. Prior to deriving this version of the Bare Earth Hillshade, the 2022 Bare Earth DTM was reprojected from UTM Zone 10 (with ground elevation pixel values in meters) to CA State Plane II (with pixel values in feet). \n\nThese lidar-derived data products are provided to Sonoma County as part of a larger 10-county effort to acquire lidar and prepare derivative products. Dates of collection vary by county and the best available (most recent and highest quality) point cloud data was used for any given area. The various point clouds were harmonized into a single, unified point cloud for the counties. From the unified point cloud, 36 raster lidar derivatives were created for each county. See the datasheet ( https://tukmangeospatial.egnyte.com/dl/ADWSBBL7ac ) for information on collection dates and to access the original DTM (in UTM Zone 10N, meters), lidar point cloud, and other derivative products", "description": "

A bare earth digital terrain model (DTM) represents the earth's surface with all vegetation and human-made structures removed. The bare earth DTMs were derived from LiDAR data using triangulated irregular network (TIN) processing of the ground point returns. It is created using the max elevation detected for each pixel at the desired resolution.<\/span><\/p>

Original Coordinate System: NAD 1983 (2011) UTM Zone 10N<\/span><\/p>

Projected Coordinate System: State Plane NAD 1983 (2011), CA Zone II, US Survey Feet<\/span><\/p>

Horizontal Datum: NAD 1983 2011<\/span><\/span><\/p>

Vertical Coordinate System: NAVD88 (Geoid 18)<\/span><\/span><\/p>

Pixel size = 1-meter<\/span><\/span><\/p>

LiDAR Derivatives for 14 California Counties<\/span><\/span><\/a><\/p>

https://tukmangeospatial.egnyte.com/dl/ADWSBBL7ac<\/span><\/span><\/a><\/p>

LiDAR Derivatives Datasheet Sonoma<\/span><\/span><\/a><\/p><\/div><\/div><\/div>", "summary": "The hillshade raster is calculated from the DTM and simulates how light and shadow would fall on the terrain creating a shaded relief. Prior to deriving this version of the Bare Earth Hillshade, the 2022 Bare Earth DTM was reprojected from UTM Zone 10 (with ground elevation pixel values in meters) to CA State Plane II (with pixel values in feet). \n\nThese lidar-derived data products are provided to Sonoma County as part of a larger 10-county effort to acquire lidar and prepare derivative products. Dates of collection vary by county and the best available (most recent and highest quality) point cloud data was used for any given area. The various point clouds were harmonized into a single, unified point cloud for the counties. From the unified point cloud, 36 raster lidar derivatives were created for each county. See the datasheet ( https://tukmangeospatial.egnyte.com/dl/ADWSBBL7ac ) for information on collection dates and to access the original DTM (in UTM Zone 10N, meters), lidar point cloud, and other derivative products", "title": "Lidar_HydroFlat_BareEarth_HS_2022", "tags": [ "DEM", "DSM", "Hillshade", "LiDAR", "Light Detection And Ranging", "Sonoma County", "DTM", "Terrain" ], "type": "Image Service", "typeKeywords": [ "ArcGIS Server", "Data", "Image Service", "Service" ], "thumbnail": "thumbnail/thumbnail.png", "url": "", "minScale": 150000000, "maxScale": 5000, "spatialReference": "WGS_1984_Web_Mercator_Auxiliary_Sphere", "accessInformation": "Funders: California Natural Resources Agency, State Coastal Conservancy, NASA, USGS, Sonoma Water, University of California, San Diego, Sonoma Ag + Open Space, Humboldt Bay Municipal Water District\n\nGrantees & Coordinating Organizations: North Coast Resource Partnership, Solano County\n\nTechnical Team: NV5 Geospatial and Tukman Geospatial", "licenseInfo": "", "portalUrl": "" }