2025 San Francisco Bay Delta LiDAR

The Basis for this Survey is the North American Datum of 1983 (NAD83(2011)) constrained to the California Spatial Reference Center (CSRC) Continuous Global Position System (CGPS) stations using published CSRC NAD83(2011) 2025.00 epoch adjustment values and the Geoid 18 Model. Results are shown in California Coordinate System 1983 (NAD83(2011) 2025.00 epoch) Zones 2 and 3, US Survey Feet and North American Vertical Datum of 1988 (NAVD88) in U.S. Survey Feet based upon NAD83(2011) 2025.00 epoch ellipsoid heights with the Geoid 18 model applied.

Please see the DWR QC Report and Guida Survey Reports for more information. DWR’s aerial mapping consultant, Guida has cleared this dataset to meet project requirements and project specifications under the direction of their California Licensed Land Surveyor. The associated data are considered DWR enterprise GIS data, which meet all appropriate requirements of the DWR Spatial Data Standards, specifically the DWR Spatial Data Standard version 3.6, dated September 27, 2023.

DWR makes no warranties or guarantees — either expressed or implied — as to the completeness, accuracy, or correctness of the data. DWR neither accepts nor assumes liability arising from or for any incorrect, incomplete, or misleading subject data. Contact: GIS@water.ca.gov