USGS Water-Year Summary 2019
11123500 Santa Ynez River below Los Laureles Canyon, near Santa Ynez, CA
LOCATION - Lat 34°32'37", long 119°51'50" referenced to North American Datum of 1927, Santa Barbara County, CA, Hydrologic Unit 18060010, in San Marcos Grant, on left bank, 0.3 mile downstream from Los Laurels Canyon Creek, 10 miles downstream from Gibraltar Reservoir, and 13.3 miles east of Santa Ynez.
DRAINAGE AREA - 277 mi².
PERIOD OF RECORD - April 1947 to current year. Monthly discharge only for some periods, published in WSP 1315-B.
GAGE - Water-stage recorder. Datum of gage is 787.8 ft above NGVD of 1929.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 67,500 ft³/s, Jan. 25, 1969, gage height, 18.88 ft, from rating curve extended above 11,600 ft³/s, on basis of peak flow for station below Gibraltar Dam plus tributary inflow; no flow for many days in most years.
PERIOD OF RECORD - DISCRETE CHEMICAL DATA: Water years 1973-89, 1991 - 2012, 2017 to current year.