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Water-Year Summary for Site 11466800

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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
00010 Temperature, water(Min.,Max.,Mean)  
00060 Discharge(Mean)  
00095 Specific cond at 25C(Min.,Max.,Mean)  
63680 Turbidity, Form Neph(Min.,Max.,Med.)  

Water year 2024: 2024-10-01 to 2025-09-30
 
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USGS Water-Year Summary 2024
11466800 Mark West Creek near Mirabel Heights, CA
LOCATION - Lat 38°29'39", long 122°51'08" referenced to North American Datum of 1927, Sonoma County, CA, Hydrologic Unit 18010110, in Molinos Land Grant, on downstream side of bridge, on right bank, 0.7 mi north of Trenton, and 3.0 mi upstream of confluence of the Russian River.
DRAINAGE AREA - 251 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 2005 to September 2010, (October 2008 to September 2010 low-flow records only), October 2011 to current year.
GAGE - Water-stage recorder. Datum of gage is 2.28 ft above NAVD of 1988.
REMARKS - Backwater conditions from the Russian River can occur during high flow periods. No regulation upstream of station, some diversion for irrigation of about 11,000 acres. See schematic diagram of Russian River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 15,500 ft³/s, Feb. 28, 2019; maximum gage height, 72.62 ft February 27, 2019; minimum discharge, -830 ft³/s, Dec. 31, 2005, from backwater of the Russian River; no flow many days.
WATER-QUALITY RECORDS
PERIOD OF RECORD -

DISCRETE WATER-QUALITY DATA:
CHEMICAL DATA: Water years July 1973 o October 1979, September 2003 to August 2010, September 2016 to May 2017.

CONTINUOUS WATER-QUALITY DATA:
SPECIFIC CONDUCTANCE: Water year November 28, 2017 to April 30, 2018.
WATER TEMPERATURE: Water years  October 2005 to May 2008 (storm season only), November 28, 2017 to April 30, 2018.
TURBIDITY: Water years January 9, 2018 to April 30, 2018. 
SEDIMENT DATA: Water years October 2005 to April 2008 (storm season only).