USGS Water-Year Summary 2023
11109525 Piru Creek below Pyramid Lake, near Gorman, CA
LOCATION - Lat 34°38'30", long 118°45'49" referenced to North American Datum of 1927, in SW 1/4 NW 1/4 sec.02, T.6 N., R.18 W., Los Angeles County, CA, Hydrologic Unit 18070102, in Los Padres National Forest, at downstream base of dam, and 11.7 mi southeast of Gorman.
DRAINAGE AREA - 295 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1988 to current year. Prior to October 1988 in files of California Department of Water Resources.
GAGE - Flow meters with totalizer and rated radial gate on top of dam. Elevation of gage is 2,200 ft above NGVD of 1929, from topographic map.
COOPERATION - Records were collected by California Department of Water Resources, under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project 2426.
EXTREMES FOR PERIOD OF RECORD - Maximum daily discharge, 6,000 ft³/s, Feb. 23, 1998; no flow Sept. 4-5, 2012.