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Scheduled Maintenance Notice
USGS will be performing maintenance on the time series data processing system beginning at 09:00 EDT on September 10, 2026. During this period, delivery of the latest time series data will be delayed. The maintenance is expected to finish within 2 hours, after which all backlogged time series data will be processed and delivered to WDFN web portals and APIs.

Available data

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0 data types available

3 data types available - data from 1985-10-16 to 2025-10-01

2 data types available - data from 2014-09-26 to 2025-08-22

442 Observed properties (data types) available - with data from 1985-06-24 to 2001-08-21

173 Sampling activities

2 data types available - with data from 2016-03-16 to 2025-03-20

1 data types available - data from 2015-10-01 to 2025-10-01

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Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	11260815	n/a
Location name	SAN JOAQUIN R NR STEVINSON CA	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	37.2951341802146	n/a
Decimal longitude (WGS84)	-120.843617601892	n/a
Latitude-longitude method	Global positioning system (GPS), Standard Positioning Service (SPS) or Precise Positioning Service (PPS)	G
Latitude-longitude accuracy	Accurate to + or - .01 sec (Differentially-Corrected GPS).	H
District	California	06
State	California	06
County	Merced County	047
Country	United States of America	n/a
Altitude of gage/land surface	71 feet	n/a
Method altitude determined	Interpolated from topographic map.	M
Altitude accuracy	2 feet	n/a
Altitude datum	National Geodetic Vertical Datum of 1929	NGVD29
Subbasin hydrologic unit	Middle San Joaquin-Lower Chowchilla	18040001
Drainage basin		n/a
Date of first construction		n/a
Drainage area	7473 square miles	n/a
Contributing drainage area		n/a
Time zone abbreviation	PST	n/a
Site honors Daylight Saving Time	Y	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