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Available data

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Continuous data

2 data types available - data from 1987-10-01 to 2026-08-06

Daily data

1 data types available - data from 1954-10-01 to 2026-08-04

Field measurements

3 data types available - data from 1970-10-12 to 2026-07-06

Discrete sample data

38 Observed properties (data types) available - with data from 2007-05-02 to 2017-05-25

4 Sampling activities

Peak measurements

2 data types available - with data from 1910-03-13 to 2025-03-24

Statistical tables for select daily data types

1 data types available - data from 1954-10-01 to 2026-08-04

Important information about this monitoring location

The elevation of this station has been determined to be 4487.42 feet above NAVD 1988. To obtain stream water-surface elevation values in NAVD 1988 add 4487.42 feet to gage height values.

Location details and information

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Operated in cooperation with:

US Bureau of Reclamation (USBR) - Mid-Pacific Region

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	11493500	n/a
Location name	WILLIAMSON RIVER NEAR KLAMATH AGENCY, OR	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	42.739925	n/a
Decimal longitude (WGS84)	-121.83451666666666	n/a
Latitude-longitude method	Interpolated from Digital MAP.	N
Latitude-longitude accuracy	Accurate to + or - 1 sec.	S
District	Oregon	41
State	Oregon	41
County	Klamath County	035
Country	United States of America	n/a
Altitude of gage/land surface	4487.42 feet	n/a
Method altitude determined	GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System	X
Altitude accuracy	0.21 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Williamson	18010201
Drainage basin		n/a
Date of first construction		n/a
Drainage area	1290 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

Monitoring location Williamson River Near Klamath Agency, OR - USGS-11493500