Download and Access Products:

Point Cloud Data	Bulk Download	opentopoID: OTLAS.092014.2871.1
Raster Data	Bulk Download	opentopoID: OTSDEM.092014.2871.1

Collection Overview:

This survey covers all of Sonoma County as well as two small portions of southern Mendocino County. Data were provided by the University of Maryland and the Sonoma County Vegetation Mapping and Lidar Program under grant NNX13AP69G from NASA's Carbon Monitoring System (Dr. Ralph Dubayah, PI). The Sonoma County Vegetation Mapping and Lidar Program is NASA/UMD's local partner in this project- its members are as follows: the Sonoma County Agricultural Preservation and Open Space District, the Sonoma County Water Agency, the California Department of Fish and Wildlife, the United States Geological Survey, the Sonoma County Information Systems Department, the Sonoma County Transportation and Public Works Department, the Nature Conservancy, and the City of Petaluma.

These data will be used for various research projects throughout Sonoma County. They are critical to assessing climate mitigation and adaptation strategies and benefits provided by the landscape, such as the amount of carbon sequestration in forests or the degree to which riparian areas, floodplains, and coastal habitats may buffer extreme weather events. Other research applications include groundwater, ecosystem services valuation, ecosystem resiliency, and wildlife habitat connectivity. Finally, these data sets are key to facilitating good planning and management for watershed protection, flood control, fire and fuels management and wildlife habitat conservation.

The data was collected between September 28 and November 26, 2013 by Watershed Sciences, Inc. (WSI). Lidar was collected at high density greater than 8 pulses per square meter. WSI used two airplanes, one carrying a Leica ALS50 and the other a Leica ALS70; systems were flown at 900 meters above ground level, capturing a scan angle of 15 degrees from nadir (30 degree field of view). 4-band, 6-inch resolution aerial photography was collected simultaneously with the Lidar data.

Dataset Acknowledgement: 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.

Dataset Citation: UMD-NASA Carbon Mapping /Sonoma County Vegetation Mapping and LiDAR Program. Distributed by OpenTopography. https://doi.org/10.5069/G9G73BM1 . Accessed: 2024-12-21       Copied to Clipboard

Use License: Not Provided

Dataset Keywords: Sonoma County, Lidar, Vegetation and Habitat Mapping, Carbon Mapping, Biomass Mapping, Riparian Mapping

Survey Date: 09/28/2013 - 10/28/2013

Publication Date: 10/13/2014

Data Provider and Roles:
Funders

• National Aeronautics and Space Administration
• Sonoma County Vegetation Mapping and LiDAR Program
• University of Maryland

Partners

• National Aeronautics and Space Administration
• Sonoma County Vegetation Mapping and LiDAR Program
• University of Maryland

Collector

• Watershed Sciences, Inc

Total number of points: 60,040,589,769 pts

Area: 4,374 km²

Point Density: 13.73 pts/m²

Classifications:

Class 1 - Unclassified	18,102,638,702
Class 2 - Ground	12,115,756,053
Class 5 - High Vegetation	27,499,909,007
Class 6 - Building	590,990,934
Class 7 - Low Point (low noise)	1,682,180,110
Class 9 - Water	49,114,963

Raster Resolution: 3 feet

Coordinate System:
Horizontal: NAD83 (2011) / California State Plane Zone II, FIPS Zone 0402 [EPSG: 2871]
Vertical: NAVD88 (GEOID 12A)

Units: feet

Survey Report: Reports

LAS Validation Data Report: SONOMA_LIDAR.html

Tile index in shapefile format: Download

Dataset Extent in GeoJSON format:
Point Cloud: SONOMA_LIDAR.geojson
Raster: SONOMA_LIDAR.geojson

Dataset Spatial Bounds: North: 39.2408510000001°     South: 38.1076840000001°     East: -122.345848°     West: -123.537898°