USGS Water-Year Summary 2024

11138500 Sisquoc River near Sisquoc, CA

LOCATION - Lat 34°50'23.84", long 120°10'01.81" referenced to North American Datum of 1983, Santa Barbara County, CA, Hydrologic Unit 18060008, in Sisquoc Grant, on left bank, 2.6 mi upstream from La Brea Creek, and 7 mi east of Sisquoc.

DRAINAGE AREA - 282 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1943 to September 1999, November 2007 to current year (since October 2020, high flow only). October 1929 to September 1933, at site 0.2 mi downstream; low-flow records not equivalent owing to diversion immediately upstream. Monthly discharge only for some periods, published in WSP 1315-B.

GAGE - Water-stage recorder and concrete diversion dam. Datum of gage is 626.99 ft above NAVD of 1988. See WSP 1735 for history of changes prior to Aug. 24, 1951.

REMARKS - No records computed below 200 ft³/s, since October 1, 2020. No regulation upstream from station. Minor diversion for irrigation at the gage. 

EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Mar. 2, 1938, reached a discharge of 11,000 ft³/s, gage height, 8.1 ft, from high-water mark in gage well, at site in use 1929-33, from rating curve extended above 2,800 ft³/s.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 23,200 ft³/s, Dec. 6, 1966, gage height, 15.75 ft, from rating curve extended above 1,700 ft³/s on basis of slope-area measurements at gage heights 10.08 and 15.75 ft; no flow Nov. 11-18, 1967.

WATER-QUALITY RECORDS

PERIOD OF RECORD -

DISCRETE WATER-QUALITY DATA:
CHEMICAL DATA: Water years 1978 to current year.

REMARKS - Discrete water quality sample results and supporting metadata are published on NWISweb. Data-Quality Indicator Code of "R" indicates reviewed and approved data. DQI Status of "S" indicates provisional data.