USGS Water-Year Summary 2021
11136800 Cuyama River below Buckhorn Canyon, near Santa Maria, CA
LOCATION - Lat 35°01'19", long 120°13'39" referenced to North American Datum of 1927, in SW 1/4 sec.14, T.11 N., R.32 W., San Luis Obispo County, CA, Hydrologic Unit 18060007, on downstream side of bridge on State Highway 166, 1.5 mi downstream from Buckhorn Canyon, 10 mi upstream from Twitchell Reservoir, and 13 mi northeast of Santa Maria.
DRAINAGE AREA - 886 mi².
- WDR CA-71-1: Drainage area. WDR CA-77-1: 1976.
PERIOD OF RECORD - October 1903 to December 1905 (published as "Santa Maria River near Santa Maria"), October 1959 to current year. Monthly discharge only for October 1903 and July 1904. Yearly estimate for water year 1941 (incomplete), published in WSP 1315-B.
GAGE - Water-stage recorder. Elevation of gage is 760 ft above NGVD of 1929, from topographic map. Prior to October 1959, nonrecording gage at different site and datum.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 26,200 ft³/s, Feb. 23, 1998, gage height, 14.76 ft, from rating curve extended above 4,900 ft³/s, on basis of slope-area measurement at gage height 14.76 ft; no flow at times in most years.
PERIOD OF RECORD
DISCRETE WATER-QUALITY DATA:
CHEMICAL DATA: Water years 1978 to current year.
SEDIMENT DATA: Water years January 1999 to 2002.