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Water-Year Summary for Site 11511990

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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(Mean,Min.,Max.)  
00095 Specific cond at 25C(Max.,Mean,Min.)  
00300 Dissolved oxygen(Max.,Mean,Min.)  
00400 pH(Med.,Max.,Min.)  
63680 Turbidity, Form Neph(Med.,Max.,Min.)  

Water year 2024: 2024-10-01 to 2025-09-30
 
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USGS Water-Year Summary 2024
11511990 KLAMATH RIVER ABOVE FALL CREEK NR COPCO, CA
LOCATION - Lat 41°58'22.80", long 122°21'53.36" referenced to North American Datum of 1983, in NE 1/4 NE 1/4 sec.36, T.48 N., R.5 W., Siskiyou County, CA, Hydrologic Unit 18010206, on right bank at downstream side of bridge on Daggett Rd, 1.8 mi downstream of Copco Dam 2, and 0.7 mi southwest of Copco.
DRAINAGE AREA - 8,000 mi². approximately
SURFACE-WATER RECORDS
PERIOD OF RECORD - December 2022 to current year.
GAGE - Water-stage recorder. Elevation of gage is 2,343 ft above NAVD of 1988, from digital elevation model.
EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 39.15 ft Apr. 19, 2023; minimum, 28.34 ft Sept. 22, 2023.
WATER-QUALITY RECORDS
PERIOD OF RECORD -

SPECIFIC CONDUCTANCE:  December 2022 to current year.

pH:  February 2023 to current year.

WATER TEMPERATURE:  December 2022 to current year.

DISSOLVED OXYGEN:  December 2022 to current year.

TURBIDITY:  February 2023 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 YSI EXO2 sonde. Manufacturers stated accuracy is the greater of +/- 2 percent or 0.3 Formazin Nephelometric Units (FNU) except for 1,000-4,000 FNU, which is +/- 5 percent. FNU values below 10 are reported to nearest 0.1 FNU. Negative recorded values are reported as 0.0 FNU.
EXTREMES FOR PERIOD OF RECORD -

SPECIFIC CONDUCTANCE: Maximum, 206 microsiemens Sept. 28, 2023; minimum, 97 microsiemens Sept. 23, 2023.

pH: Maximum, 9.5 units Sept. 28, 2023; minimum, 7.3 units Sept. 15, 2023.

WATER TEMPERATURE: Maximum, 24.1°C July  6, 2023; minimum, 2.1°C Jan. 31, 2023.

DISSOLVED OXYGEN: Maximum, 15.1 mg/L Mar. 2, 2023; minimum, 3.2 mg/L Sept. 15, 2023.

TURBIDITY: Maximum, 1,490 FNU Sept. 29, 2023; minimum, 1.9 FNU July 3,2023.