Some USGS data collection at this gage ceased on Oct 1, 2025, due to loss of funding.

Available data

Select data types to graph from categories based on the way the data were collected.

21 data types available - data from 1994-05-12 to 2026-08-04

1 data types available - data from 1994-05-14 to 2026-08-02

4 data types available - data from 1995-01-19 to 2026-07-08

172 Observed properties (data types) available - with data from 2010-09-17 to 2026-07-01

355 Sampling activities

1 data types available - data from 1994-05-14 to 2026-08-02

Zoom out to see link to My Favorites

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	11337190	n/a
Location name	SAN JOAQUIN R A JERSEY POINT CA	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	38.0521424217496	n/a
Decimal longitude (WGS84)	-121.688842816828	n/a
Latitude-longitude method	Interpolated from map	M
Latitude-longitude accuracy	Accurate to + or - 1 sec.	S
District	California	06
State	California	06
County	Contra Costa County	013
Country	United States of America	n/a
Altitude of gage/land surface	0	n/a
Method altitude determined	Level or other surveyed method.	L
Altitude accuracy	0.1 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	San Joaquin Delta	18040003
Drainage basin		n/a
Date of first construction		n/a
Drainage area		n/a
Contributing drainage area		n/a
Time zone abbreviation	PST	n/a
Site honors Daylight Saving Time	N	n/a
National aquifer		n/a
Local aquifer		n/a
Local aquifer type		n/a
Well depth		n/a
Hole depth		n/a
Source of depth data		n/a

Monitoring location San Joaquin R a Jersey Point CA - USGS-11337190