USGS Home
Contact USGS
Search USGS

National Water Information System: Web Interface

USGS Water Resources   

Data Category:
Home Current Conditions Site Information Mapper Surface Water Groundwater Water Quality Water Use Geographic Area:
United States Alabama Alaska American Samoa Arizona Arkansas California Colorado Connecticut Delaware Dist. of Columbia Florida Georgia Guam Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Northern Mariana Islands Ohio Oklahoma Oregon Pennsylvania Puerto Rico Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virgin Islands Virginia Washington West Virginia Wisconsin Wyoming

Page Loading - Please Wait...

DESCRIPTION:

Latitude 38°03'08",   Longitude 121°41'16"   NAD27

Contra Costa County, California, Hydrologic Unit 18020109

Datum of gage: 0 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1994-05-11	2017-07-21
Daily Data
Discharge, tidally filtered, cubic feet per second	1994-05-14	2017-07-18	5237
Daily Statistics
Discharge, tidally filtered, cubic feet per second	1994-05-14	2014-09-29	4254
Monthly Statistics
Discharge, tidally filtered, cubic feet per second	1994-05	2014-09
Annual Statistics
Discharge, tidally filtered, cubic feet per second	1994	2014
Field measurements	1995-01-19	2017-05-22	1559
Field/Lab water-quality samples	2010-09-17	2017-06-15	149
Additional Data Sources	Begin Date	End Date	Count
Instantaneous-Data Archive  **offsite**	1994-05-11	2005-09-30	351216

OPERATION:

Record for this site is maintained by the USGS California Water Science Center

Email questions about this site to California Water Science Center Water-Data Inquiries