Warning: Javascript must be enabled to use all the features on this page!


Page Loading - Please Wait...

Click to hideNews Bulletins

Water-Year Summary for Site 11520500

Click to hide Water-Year Summary instructions and information
  • 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
00060 Discharge(Mean)  

Water year 2018: 2018-10-01 to 2019-09-30
 

Print this page
USGS Water-Year Summary 2018
11520500 Klamath River near Seiad Valley, CA
LOCATION - Lat 41°51'14", long 123°13'52" referenced to North American Datum of 1927, in SW 1/4 SW 1/4 sec.03, T.46 N., R.12 W., Siskiyou County, CA, Hydrologic Unit 18010206, Klamath National Forest, on left bank, 0.4 mi upstream from Bittenbender Creek, 1.4 mi downstream from Grider Creek, 2.2 mi west of Seiad Valley, and 55 mi downstream from Iron Gate Dam.
DRAINAGE AREA - 6,940 mi², approximately (not including Lost River, Butte Creek, or Lower Klamath Lake Basins).
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1912 to September 1925, July 1951 to current year. Monthly discharges only for some periods, published in WSP 1315-B. CHEMICAL DATA: Water years 1959-66, 2002-03. DISSOLVED OXYGEN: Water years 2000-01 (daily), June 2002 to November 2003 (seasonal records only). pH: Water years 2000-01 (daily), June 2002 to November 2003 (seasonal records only). SPECIFIC CONDUCTANCE: Water years 2000-01 (daily), June 2002 to November 2003 (seasonal records only). AIR TEMPERATURE: Water years 1999-2001. WATER TEMPERATURE: Water years 1964-79, 2000-01 (daily), June 2002 to November 2003 (seasonal records only). SEDIMENT DATA: Water years 1955-56.
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is 1,320 ft above NGVD of 1929, from river-profile map. November 1912 to June 1925, nonrecording gage at site 3.5 mi upstream at different datum.
REMARKS -
  • Water Year 2015: Records good.
  • Water Year 2016: Records good except Oct. 13 through Dec. 2 which are fair, and estimated daily discharge which are poor.
  • Water Year 2017: Records good.
Flow regulated by reservoirs and powerplants upstream from station. Large diversions upstream from station for irrigation. See schematic diagram of Klamath River and Trinity River Basins available from the California Water Science Center.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of 1927 reached a peak stage of 22 ft, from information furnished by local residents.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 165,000 ft³/s, Dec. 23, 1964, gage height, 33.75 ft, from floodmarks, from rating curve extended above 49,000 ft³/s, on basis of slope-area measurements at gage heights 20.1 and 29.2 ft; minimum daily, 320 ft³/s, Nov. 25, 1917.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 1955-79, 2000-04. CHEMICAL DATA: Water years 1959-66, 2002-03. DISSOLVED OXYGEN: Water years 2000-01 (daily), June 2002 to November 2003 (seasonal records only). pH: Water years 2000-01 (daily), June 2002 to November 2003 (seasonal records only). SPECIFIC CONDUCTANCE: Water years 2000-01 (daily), June 2002 to November 2003 (seasonal records only). AIR TEMPERATURE: Water years 1999-2001. WATER TEMPERATURE: Water years 1964-79, 2000-01 (daily), June 2002 to November 2003 (seasonal records only). SEDIMENT DATA: Water years 1955-56.
PERIOD OF DAILY RECORD - DISSOLVED OXYGEN: January 2000 to September 2001, June 2002 to November 2003 (seasonal records only). pH: January 2000 to September 2001, June 2002 to November 2003 (seasonal records only). SPECIFIC CONDUCTANCE: January 2000 to September 2001, June 2002 to November 2003 (seasonal records only). AIR TEMPERATURE: December 1999 to September 2001. WATER TEMPERATURE: October 1963 to May 1979, January 2000 to September 2001 (daily), June 2002 to November 2003 (seasonal records only).
INSTRUMENTATION - Water-quality monitor January, 2000 through November, 2003. Electronic data logger with 60 minute interval.
EXTREMES FOR PERIOD OF DAILY RECORD - DISSOLVED OXYGEN: Maximum recorded, 17.8 mg/L, Apr. 13, 2000; minimum recorded, 5.2 mg/L, Aug. 26, 2001. pH: Maximum recorded, 9.4 standard units, July 2, 2001; minimum recorded, 6.3 standard units, Nov. 16, 2001. SPECIFIC CONDUCTANCE: Maximum recorded, 414 microsiemens, Feb. 22, 23, 2000; minimum recorded, 117 microsiemens, May 25, 2003. AIR TEMPERATURE: Maximum recorded, 98°F, Aug. 8, 2001; minimum recorded, 19°F, Feb. 13, 2001. WATER TEMPERATURE: Maximum recorded, 29.5°C, July 26, 1970; minimum recorded, 0.0°C, Dec. 30, 31, 1978.