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


Page Loading - Please Wait...

Click to hideNews Bulletins

Water-Year Summary for Site 11176145

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)  
80155 Suspnd sedmnt disch(Mean)  
80225 Bedload sediment(Mean)  

Water year 2023: 2022-10-01 to 2023-09-30
 
Print this page
USGS Water-Year Summary 2023
11176145 ARROYO LAS POSITAS A LIVERMORE CA
LOCATION - Lat 37°41'59", long 121°46'21" referenced to North American Datum of 1927, Alameda County, CA, Hydrologic Unit 18050004, in Valle de San Jose Grant, on left bank, 10 ft upstream of North Livermore Avenue bridge, 0.9 mi upstream of Cayetano Creek, and 1.3 mi north of Livermore.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 2016 to May 1, 2022 (discontinued) (seasonal record October 1 to April 30).
COOPERATION - Discharge records collected by Alameda County Zone 7 Water Agency, under general supervision of the U.S. Geological Survey.
WATER-QUALITY RECORDS
PERIOD OF RECORD -

DISCRETE WATER-QUALITY DATA:
TOTAL LOAD SEASONAL PERIODIC: Water years December 1, 2016 to May 1, 2022 (storm season only).

CONTINUOUS WATER-QUALITY DATA:
SPECIFIC CONDUCTANCE: Water years August 1980 to October 1983.
SEDIMENT DATA: Water years December 2016 to May 1, 2022 (storm season only).

REMARKS - The practice of assigning qualitative accuracy ratings to water-quality data was discontinued in water year 2017.
EXTREMES FOR PERIOD OF RECORD -

SUSPENDED SEDIMENT.--Maximum monthly load, 7,770 tons, Feb. 2017, Minimum monthly load, 45.3 tons, Dec. 2016.