USGS Water-Year Summary for Site 11192500

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

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USGS Water-Year Summary 2023

11192500 Kern River near Democrat Springs, CA

LOCATION - Lat 35°31'15", long 118°40'34" referenced to North American Datum of 1927, in NE 1/4 SE 1/4 sec.06, T.28 S., R.31 E., Kern County, CA, Hydrologic Unit 18030003, on left bank, 0.5 mi downstream from diversion dam, 1.0 mi southwest of Democrat Springs, 2.1 mi upstream from Cow Creek, and at mile 53.6.

DRAINAGE AREA - 2,258 mi².

REVISIONS HISTORY - WSP 1930: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - July 1950 to current year. Prior to October 1954, records for river and conduit published separately; combined flow only, October 1954 to September 1960.

GAGE - Water-stage recorder on river; water-stage recorder for conduit diversion. Datum of gage is 1,837.70 ft above NGVD of 1929.

COOPERATION - Records were provided by Southern California Edison Co., under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 2290.

REMARKS - Kern River No. 1 Conduit (station 11192000) diverts up to about 420 ft³/s from left bank of Kern River 0.4 mi upstream from station in sec.13, T.28 S., R.30 E., for power development; water is returned to river 10 mi downstream from station. Flow regulated by Isabella Lake 22 mi upstream beginning in 1954. Many diversions upstream from station for irrigation. For records of combined discharge of river and conduit, see station 11192501. See schematic diagram of Kern River Basin available from the California Water Science Center.

EXTREMES FOR PERIOD OF RECORD - River only, prior to regulation by Isabella Lake in 1954: Maximum discharge, 40,000 ft³/s, Nov. 19, 1950, gage height, 30.7 ft, from rating curve extended above 8,700 ft³/s, on basis of computation of peak flow over dam (basic data for computation provided by Southern California Edison Co.); minimum daily, 0.7 ft³/s, Nov. 17-19, 1951. Since regulation by Isabella Lake: Maximum discharge, 10,100 ft³/s, Dec. 6, 1966, gage height, 18.55 ft; no flow May 26-28, 1977. Combined flow, prior to regulation by Isabella Lake: Maximum discharge, 40,000 ft³/s, Nov. 19, 1950; minimum daily, 123 ft³/s, Sept. 22, 1951. Since regulation by Isabella Lake: Maximum discharge, 10,100 ft³/s, Dec. 6, 1966; minimum daily, 10 ft³/s, Dec. 17, 1968.