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Water-Year Summary for Site 11501000

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00010 Temperature, water(Max.,Min.,Mean)  
00060 Discharge(Mean)  
63680 Turbidity, Form Neph(Max.,Min.,Med.)  

Water year 2022: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2022
LOCATION - Lat 42°35'03.5", long 121°50'54.0" referenced to North American Datum of 1983, in NE 1/4 NW 1/4 sec.35, T.34 S., R.7 E., Klamath County, OR, Hydrologic Unit 18010202, on right bank, 1.0 mi northeast of Chiloquin, 4.6 mi upstream from Modoc Point Canal intake and at mile 5.4.
DRAINAGE AREA - 1,565 mi².
REVISIONS HISTORY - WSP 591: 1922(M). WSP 1011: 1943(M). WSP 1565: 1921-22.
PERIOD OF RECORD - July to October 1920, March 1921 to current year. Monthly discharge only July 1920, published in WSP 1315-B. Prior to October 1931, published as "at McCready Ranch, near Chiloquin."
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 4,202.43 ft above NGVD of 1929. Prior to Oct. 1, 1931, nonrecording gage at site 12 mi upstream at different datum.
REMARKS - Diversions for irrigation upstream from station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 14,900 ft³/s Dec. 26, 1964, gage height, 10.37 ft; minimum daily discharge, 50 ft³/s May 26, 1926.

WATER TEMPERATURE: April 2005 to current year.

TURBIDITY: November 2007 to August 2010, April 2012 to current year.

INSTRUMENTATION - Water-quality monitor. Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government.
REMARKS - TURBIDITY: Data collected using a Forest Technology DTS-12 turbidity sensor. Manufacturer's stated accuracy is +/- 2 percent of reading + 0.2 Formazin Nephelometric Units (FNU) for 0-399 FNU, and +/- 4 percent for 400-1,600 FNU. FNU values below 10 are reported to nearest 0.1 FNU. Negative recorded values are reported as 0.0 FNU. Chemical analyses and suspended sediment data collected at this location are available via NWISWeb.

WATER TEMPERATURE: Maximum, 29.6°C July 2, 2015; minimum, 0.0°C on many days most years.

TURBIDITY: Maximum, 95 FNU Jan. 21, 2016; minimum, <1 FNU on several to many days during most years.