Warning: Javascript must be enabled to use all the features on this page!

Page Loading - Please Wait...

* We've detected you're using a mobile device. Find our Next Generation Station Page here.
Click to hideNews Bulletins

Water-Year Summary for Site USGS 11109600

Click to hide Water-Year Summary instructions and information
  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00060 Discharge(Mean)  

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

Print this page
USGS Water-Year Summary 2023
11109600 Piru Creek above Lake Piru, CA
LOCATION - Lat 34°31'23", long 118°45'22" referenced to North American Datum of 1927, in NE 1/4 NW 1/4 sec.15, T.5 N., R.18 W., Ventura County, CA, Hydrologic Unit 18070102, on left bank near Blue Point, 1.3 mi downstream from Agua Blanca Creek, 4.3 mi upstream from Santa Felicia Dam, 8.0 mi northeast of Piru, and 15 mi downstream from Pyramid Dam.
DRAINAGE AREA - 372 mi².
REVISIONS HISTORY - WSP 1928: Drainage area.
PERIOD OF RECORD - October 1955 to current year. SPECIFIC CONDUCTANCE: Water years 1972-80.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 1,058.55 ft above NGVD of 1929 (levels by U.S. Forest Service). Prior to Dec. 15, 1972, at site 0.3 mi upstream at different datum.
REMARKS - Records collected in connection with Federal Energy Regulatory Commission (FERC) project no. 2153. Flow regulated beginning December 1971 by Pyramid Lake (station 11109520). Imported water from the California Water Project stored and released at Pyramid Dam. See schematic diagram of Santa Clara River Basin available from the California Water Science Center.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Mar. 2, 1938, reached a discharge of 35,000 ft³/s.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 40,000 ft³/s, Jan. 10, 2005, gage height, 16.39 ft, from floodmark, from rating curve extended above 1,000 ft³/s, on basis of slope-area measurement at gage height 16.39 ft, maximum gage height, 18.6 ft, Feb. 25, 1969, site and datum then in use; no flow at times in some years.