USGS Water-Year Summary for Site 11363000

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)

Select a water year

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

Print this page

USGS Water-Year Summary 2023

11363000 Pit River at Big Bend, CA

LOCATION - Lat 41°01'10", long 121°54'36" referenced to North American Datum of 1927, in NW 1/4 SW 1/4 sec.31, T.37 N., R.1 E., Shasta County, CA, Hydrologic Unit 18020003, on left bank at Big Bend, 0.4 mi downstream from Nelson Creek, 1.5 mi upstream from Kosk Creek, and 3.1 mi downstream from Pit No. 5 Dam.

DRAINAGE AREA - 4,711 mi². excluding Goose Lake Basin.

REVISIONS HISTORY - WSP 1345: 1911, 1914 (instantaneous maximum discharge), 1916 (instantaneous maximum discharge), 1917, 1928, 1935-36 (instantaneous maximum discharge). WDR CA-75-4: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1910 to current year beginning October 2016, flows only published to 13,900 ft³/s). Monthly discharge only for some periods, published in WSP 1315-A. Published as "at Henderson" 1910-23.

GAGE - Water-stage recorder. Datum of gage is 1,674.47 ft above NGVD of 1929. Prior to Dec. 28, 1912, nonrecording gage; Dec. 28, 1912, to June 21, 1924, water-stage recorder at same site, at datum 7.69 ft higher. June 22, 1924, to Sept. 30, 1988, at site 200 ft downstream at same datum.

COOPERATION - Records were collected by Pacific Gas and Electric Co., under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 233.

REMARKS - Low flow completely regulated by many reservoirs and powerplants, total usable reservoir capacity, about 253,000 acre-ft. Many diversions upstream from station; diversion to Pit No. 5 Powerplant (station 11362700) began May 1, 1944. Beginning 2017 WY flows computed to 13,900 ft³/s. See schematic diagram of Pit River and McCloud River Basins available from the California Water Science Center. No flows computed above 13,900 ft³/s beginning Oct. 2016.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 49,000 ft³/s, Jan. 25, 1970, gage height, 18.17 ft, in gage well, 19.0 ft, from floodmarks, site then in use, from rating curve extended above 17,000 ft³/s, maximum gage height, 18.70 ft, Feb. 20, 1986, site then in use; minimum daily, 692 ft³/s, July 9, 1925; minimum daily since diversion to Pit No. 5 Powerplant, 34 ft³/s, Mar. 29, 1955.