USGS Water-Year Summary for Site 04119400

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean)
	00060 Discharge(Mean)
	00095 Specific cond at 25C(Max.,Min.,Mean)
	00300 Dissolved oxygen(Max.,Min.,Mean)
	00400 pH(Max.,Min.,Med.)
	63680 Turbidity, Form Neph(Min.,Med.,Max.)

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Water year 2024: 2024-10-01 to 2025-09-30

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USGS Water-Year Summary 2024

04119400 GRAND RIVER NEAR EASTMANVILLE, MI

LOCATION - Lat 43°01'27", long 86°01'35" referenced to North American Datum of 1927, in SE 1/4 NE 1/4 sec.01, T.7 N., R.15 W., Ottawa County, MI, Hydrologic Unit 04050006, on left bank within Southern Grand Marina.

DRAINAGE AREA - 5,290 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD - November 21, 2010 to current year.

GAGE - Water-stage recorder, acoustic velocity meter and crest-stage gage. Datum of gage is 569.09 ft above NAVD 88.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 36,500 ft³/s, Apr. 22, 2013, gage height, 20.37 ft, from floodmark.

WATER-QUALITY RECORDS

PERIOD OF RECORD - Water years 2003 to current year.

PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: April 2011 to October 2014, April 2015 to current year. pH: April 2011 to October 2014, April 2015 to April 2018. WATER TEMPERATURE: April 2011 to October 2014, April 2015 to current year. DISSOLVED OXYGEN: April 2011 to October 2014, April 2015 to current year. TURBIDITY: April 2011 to October 2014, April 2015 to current year.

INSTRUMENTATION - Water-quality monitor telemeter, set for 12-minute measurement interval.

EXTREMES FOR PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Maximum recorded, 1180 microsiemens, Feb. 4, 2019; minimum recorded, 349 microsiemens, Feb. 26, 27, 2018. pH: Maximum recorded, 9.4 std. units, Sept. 25, 2013; minimum recorded, 7.3 std. units, Sept. 11, 2013, Oct. 27, 2017. WATER TEMPERATURE: Maximum recorded, 32.1°C, July 6, 2012; minimum recorded, -0.3°C, on several days during water year 2017. DISSOLVED OXYGEN: Maximum recorded, 26.3 mg/L, July 9, 2012; minimum recorded, 3.1mg/L, July 7, 2021. TURBIDITY: Maximum recorded, 570 FNU, Sept. 4, 2013; minimum recorded, 0.3 FNU, Oct. 31, 2020.