Mosaic contains Sentinel 2 NDWI imagery acquired since 2/13/2023 by ESA/Copernicus surrounding the San Joaquin Valley. Data was downloaded from the Copernicus Open Access Hub and mosaiced by DWR. Imagery resolution is 10m.

Spatial reference system is WGS 1984 UTM Zone 11N. The Sentinel-2 mission consists of two satellites developed to support vegetation, land cover, and environmental monitoring. The Sentinel-2A satellite was launched by ESA on June 23, 2015, and operates in a sun-synchronous orbit with a 10-day repeat cycle. A second identical satellite (Sentinel-2B) was launched March 7, 2017. Together they cover all Earth’s land surfaces, large islands, and inland and coastal waters every five days. The Sentinel-2 MultiSpectral Instrument (MSI) acquires 13 spectral bands ranging from Visible and Near-Infrared (VNIR) to Shortwave Infrared (SWIR) wavelengths along a 290-km orbital swath. The MSI sensor data are complementary to data acquired by the U.S. Geological Survey (USGS) Landsat 8 Operational Land Imager (OLI) and Landsat 7 Enhanced Thematic Mapper Plus (ETM+) (Comparison of Sentinel-2 and Landsat).

This is an official DWR Image Service, which meets all appropriate requirements of the DWR Spatial Data Standards, specifically the DWR Spatial Data Standards version 3.5, dated April 12, 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.

Comments, problems, improvements, updates, or suggestions should be forwarded to gis@water.ca.gov.