I12 Salinity Contours

Data represents maximum up-estuary intrusion of the 1 ppt salinity contour. The lines represent 1000 ppt chloride per million, measured 1½ hours after high tide. This data contains contours for 1921-1990.
Organization: State of California
Last updated: 2025-07-23T20:16:28.153768
Tags: 1921-1990, 2019, base-maps, boundary, california-department-of-water-resources, contours, current, delta, delta-atlas, dwr, dwr-gis-atlas, earth-cover, environment, imagery, inland-waters, maximum-salinity, sacramento, salinity, san-joaquin