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Water-Year Summary for Site 11273400

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00010 Temperature, water(Mean,Max.,Min.,Med.)  
00060 Discharge(Mean)  
00095 Specific cond at 25C(Mean,Max.,Min.,Med.)  
00300 Dissolved oxygen(Mean,Max.,Min.)  
00400 pH(Max.,Min.,Med.)  
32315 Relative fChl, water, in situ(Med.,Min.,Max.)  
32316 fChl, water, in situ(Med.,Max.,Min.)  
63680 Turbidity, Form Neph(Med.,Min.,Max.) [TS087: YSI 6136]  
63680 Turbidity, Form Neph(Min.,Max.,Med.) [TS213: YSI EXO]  

Water year 2020: 2020-10-01 to 2021-09-30

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USGS Water-Year Summary 2020
11273400 San Joaquin River above Merced River, near Newman, CA
LOCATION - Lat 37°20'50.2", long 120°58'30.5" referenced to North American Datum of 1927, in SW 1/4 SW 1/4 sec.03, T.7 S., R.9 E., Stanislaus County, CA, Hydrologic Unit 18040001, on left bank, 1,000 ft upstream from the Merced River, 1,500 ft upstream from bridge on Hills Ferry Road/Kelley Road, and 3.4 mi northeast of Newman.
DRAINAGE AREA - 7,949 mi².
PERIOD OF RECORD - August 2009 to current year (low-flow station only).
GAGE - Water-stage recorder. Elevation of gage is 60 ft above NGVD of 1929, from topographic map.
REMARKS - No records computed above 2,500 ft³/s. Natural flow of stream affected by storage reservoirs, ground-water withdrawals, diversions for irrigation, and imported water. Low flows consist mainly of return water from irrigated areas.
EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 66.34 ft, Feb. 13, 2017, discharge unknown; minimum daily, 59.2 ft³/s, Oct. 8 2016.

CHEMICAL DATA: Water years 2014-2017.

DISSOLVED OXYGEN: Water years October 2009 to current year.
pH: Water years April 2012 to current year.
SPECIFIC CONDUCTANCE: Water years August 2009 to current year.
WATER TEMPERATURE: Water years August 2009 to current year.
TURBIDITY: Water years April 2012 to current year.
CHLOROPHYLL: Water years April 2012 to current year.

INSTRUMENTATION - Water-quality monitor since August 2009.
REMARKS - Water-quality record may not represent total flow during times of backwater from the Merced River.
EXTREMES FOR PERIOD OF DAILY RECORD - DISSOLVED OXYGEN: Maximum recorded, 21.0 mg/L, July 13, 2013; minimum recorded, 1.2 mg/L, June 6, 2019. pH: Maximum recorded, 9.0 standard units, several days in July 2013, June 28, 29, 2014; minimum recorded, 6.4 standard units, June 25, 2017. SPECIFIC CONDUCTANCE: Maximum recorded, 4,890 microsiemens, June 21, 2015; minimum recorded, 79 microsiemens, June 27, 2017. WATER TEMPERATURE: Maximum recorded, 34.4°C, June 26,2015; minimum recorded, 4.6°C, Dec. 10, 2014. TURBIDITY: Maximum recorded, 488 FNU, March 25, 2018; minimum recorded, 1.1 FNU, Dec 17, 18 2015. CHLOROPHYLL: Maximum recorded, 99.7 ug/L, May 12, 2016; minimum recorded, 4.1 ug/L, Sept. 27, 2014. CHLOROPHYLL RFU: Maximum recorded, 7.9 RFU, Sept. 5, 2017; minimum recorded, 0.6 Jan. 19, 2017