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.

16 data types available - data from 1987-01-09 to 2026-08-02

1 data types available - data from 1987-01-09 to 2026-07-31

3 data types available - data from 1996-10-15 to 2026-07-30

224 Observed properties (data types) available - with data from 1993-02-19 to 2026-07-01

356 Sampling activities

1 data types available - data from 1987-01-09 to 2026-07-31

Available location images

Middle River at Middle River

Middle River at Middle River, CA

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Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	11312676	n/a
Location name	MIDDLE R AT MIDDLE RIVER CA	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	37.94226944444444	n/a
Decimal longitude (WGS84)	-121.5337	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 - .5 sec (PLGR/PPS GPS).	5
District	California	06
State	California	06
County	San Joaquin County	077
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