| snippet:
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2013 LiDAR Derived Hydroflattened Bare Earth DEM - Sonoma County CA
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| summary:
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2013 LiDAR Derived Hydroflattened Bare Earth DEM - Sonoma County CA
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| accessInformation:
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Sonoma County Vegetation Mapping and LiDAR Consortium, NASA, University of Maryland, Watershed Sciences, Inc., Tukman Geospatial LLC
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| thumbnail:
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thumbnail/{10A22663-CEE5-4F18-A4E2-A65FA511FB50}.png
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| typeKeywords:
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["Data","Service","Image Service","ArcGIS Server"]
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| description:
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A bare earth digital elevation model (DEM) represents the earth's surface with all vegetation and human-made structures removed. The bare earth DEMs were derived from LiDAR data using triangulated irregular network (TIN) processing of the ground point returns. Hydro-flattened Bare Earth DEMs represent water bodies in a cartographically and aesthetically pleasing manner, and are not intended to accurately map water surface elevations. In a Hydro-flattened DEM, water surfaces are flat and level for lakes with a greater area than two acres, and gradated for rivers or other long impoundments (e.g., reservoirs) that are wider than 100 feet, and tidal areas. Any existing island larger than one acre was be delineated. Water surface edge elevations were at or below the immediately surrounding terrain. Each image corresponds to a 37,800-square-foot tile. Each pixel is 3 feet and represents an average elevation for that area. The specified coordinate system for this dataset is California State Plane Zone II (FIPS 0402), NAD83 (2011), with units in US Survey Feet for horizontal, and vertical units are NAVD88 (12A) US Survey Feet. The dataset encompasses all of Sonoma County and parts of Mendocino County. WSI collected the LiDAR and created this data set for the Sonoma County Vegetation Mapping and LiDAR Program.
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| licenseInfo:
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LiDAR data and orthophotography were provided by the University of Maryland under grant NNX13AP69G from NASA's Carbon Monitoring System (Dr. Ralph Dubayah and Dr. George Hurtt, Principal Investigators). This grant also funded the creation of derived forest cover and land cover information, including a countywide biomass and carbon map, a canopy cover map, and DEMs. The Sonoma County Vegetation Mapping and LiDAR Program funded LiDAR derived products in the California State Plane Coordinate System, such as DEMs, hillshades, building footprints, 1-foot contours, and other derived layers. The entirety of this data is freely licensed for unrestricted public use, unless otherwise noted. Any use of these data, including value-added products, within reports, papers, and presentations must acknowledge NASA Grant NNX13AP69G, the University of Maryland, and the Sonoma Vegetation Mapping and LiDAR Program as their sources.
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| catalogPath:
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| title:
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HYDROFLATTENED_BARE_EARTH
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| type:
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Image Service
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| url:
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http://localhost:6080/arcgis/services/SONOMA_HYDROFLATTENED_BARE_EARTH/ImageServer
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| tags:
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["LiDAR","Light Detection And Ranging","Sonoma County","Lake Mendocino","Sonoma Lake Watershed"]
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| culture:
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en-US
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| name:
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SONOMA_HYDROFLATTENED_BARE_EARTH
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| guid:
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| spatialReference:
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NAD_1983_StatePlane_California_II_FIPS_0402_Feet_2011
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