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DESCRIPTION:

Latitude 38°03'21",   Longitude 121°40'01"   NAD83

Contra Costa County, California, Hydrologic Unit 18040003

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	2006-06-29	2025-07-15
Daily Data
Discharge, tidally filtered, cubic feet per second	2006-07-01	2025-07-12	6106
Daily Statistics
Discharge, tidally filtered, cubic feet per second	2006-07-01	2023-06-05	5366
Monthly Statistics
Discharge, tidally filtered, cubic feet per second	2006-07	2023-06
Annual Statistics
Discharge, tidally filtered, cubic feet per second	2006	2023
Field measurements	2006-08-10	2025-04-09	769
Field/Lab water-quality samples	1994-06-23	2023-12-13	56
Water-Year Summary	2014	2021	8
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