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DESCRIPTION:

Latitude 38°02'34",   Longitude 121°55'09"   NAD27

Contra Costa County, California, Hydrologic Unit 18050001

Datum of gage: 0 feet above   NGVD29.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1994-02-23	2025-09-04
Field measurements	2013-01-10	2014-01-15	57
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	1998-10-08	2023-09-22	602
Revisions	Loading...

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