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DESCRIPTION:

Latitude 37°37'36",   Longitude 121°52'55"   NAD27

Alameda County, California, Hydrologic Unit 180500040503

Drainage area: 403.0 square miles

Datum of gage: 260.11 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	2010-10-01	2025-08-28
Daily Data
Temperature, water, degrees Celsius	1959-10-07	2023-07-04	21340
Discharge, cubic feet per second	1912-04-01	2025-08-27	25348
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2003-11-26	2023-07-04	20524
pH, water, unfiltered, field, standard units	2003-11-26	2023-07-04	20007
Suspended sediment concentration, milligrams per liter	2006-10-01	2024-04-30	3613
Suspended sediment discharge, short tons per day	2006-10-01	2024-04-30	3614
Daily Statistics
Temperature, water, degrees Celsius	2003-11-26	2023-07-04	4655
Discharge, cubic feet per second	1912-04-01	2025-04-29	25228
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2003-11-26	2023-07-04	4761
Suspended sediment concentration, milligrams per liter	2006-10-01	2024-04-30	3613
Suspended sediment discharge, short tons per day	2006-10-01	2024-04-30	3614
Monthly Statistics
Temperature, water, degrees Celsius	2003-11	2023-07
Discharge, cubic feet per second	1912-04	2025-04
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2003-11	2023-07
Suspended sediment concentration, milligrams per liter	2006-10	2024-04
Suspended sediment discharge, short tons per day	2006-10	2024-04
Annual Statistics
Temperature, water, degrees Celsius	2004	2023
Discharge, cubic feet per second	1912	2025
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2004	2023
Suspended sediment concentration, milligrams per liter	2007	2024
Suspended sediment discharge, short tons per day	2007	2024
Peak streamflow	2004-01-01	2024-02-19	21
Field measurements	2003-09-05	2025-06-12	313
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	1960-11-15	2022-04-27	1516
Water-Year Summary	2005	2024	20
Revisions	Loading...

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