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Water-Year Summary for Site USGS 11121900

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  • 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 2021: 2020-10-01 to 2021-09-30

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USGS Water-Year Summary 2021
11121900 Gibraltar Dam Diversion Weir at Gibraltar Dam, CA
LOCATION - Lat 34°31'27", long 119°41'10" referenced to North American Datum of 1927, Santa Barbara County, CA, Hydrologic Unit 18060010, on left bank, 0.11 mi below Gibraltar Dam, 0.11 mi west of Forest Route 5N18, and 7.4 mi north of Santa Barbara.
PERIOD OF RECORD - Water years 1970-1982, October 1988 to current year.
GAGE - Custom-built stilling well attached to flume via pipe. OTT Fad5 submersible pressure transducer connected to Satlink 3 datalogger. City of Santa Barbara staff in flume, USGS staff at stilling well. Offset from City of Santa Barbara's flume staff (yellow sticker) and USGS staff attached to small stilling well is 17.53 +/- .02
COOPERATION - City of Santa Barbara operates and maintains diversion tunnel and flume.
REMARKS - Flow is diverted to City of Santa Barbara from Gibraltar Reservoir above Gibraltar dam. New diversion flume of partially-open top design installed September 2019.

Maximum computed discharge, 27.8cfs, Feb 11-13 2003; no flow for part of each year.