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Updated: 2025-05-29T16:10:41.000Z
|Harvested: July 24, 2025 at 02:04 PM
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.