USGS Water-Year Summary for Site 06818000

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean)
	00060 Discharge(Mean)
	00065 Gage height(Obs.)
	00095 Specific cond at 25C(Max.,Min.,Mean)
	00300 Dissolved oxygen(Max.,Min.,Mean)
	63680 Turbidity, Form Neph(Max.,Mean,Min.)
	80297 SS load, regres ss(Mean)
	99133 NO3+NO2,water,insitu(Min.,Max.,Mean)
	99409 Susp sediment,wu,est(Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

06818000 MISSOURI RIVER AT ST. JOSEPH, MO

LOCATION - Lat 39°45'11.7", long 94°51'24.6" referenced to North American Datum of 1983, in NW 1/4 SE 1/4 sec.17, T.57 N., R.35 W., Buchanan County, MO, Hydrologic Unit 10240011, on left bank at downstream abutment of St. Joseph and Grand Island Railroad Bridge in St. Joseph, and at mile 448.2.

DRAINAGE AREA - 426,500 mi². the 3,959 mi² in Great Divide basin are not included.

REVISIONS HISTORY - WDR MO-76-1: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - Oct 1928 to current year. Gage-height records collected in vicinity 1873-99 are contained in reports of the Missouri River Commission; since 1900 in reports of the National Weather Service.

GAGE - Water-stage recorder. Datum of gage is 789.27 ft above North American Vertical Datum of 1988. Prior to Oct 21, 1931 nonrecording gage and from Oct 21, 1931, to Dec 31, 1933, water-stage recorder, both at same site at datum 793.69 ft above National Geodetic Vertical Datum of 1929.

REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS MO Water Science Center. Some regulation from many upstream reservoirs.

EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Apr 29, 1881, reached a stage of 27.2 ft, present datum, discharge, about 370,000 ft³/s, computed by the U.S. Army Corps of Engineers. Flood of Jun 1844 reached a stage of 24.5 ft, discharge, about 350,000 ft³/s, computed by the U.S. Army Corps of Engineers.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 397,000 ft³/s, Apr 22, 1952; maximum gage-height, 32.07 ft; Jul 26, 1993; minimum discharge, 2,300 ft³/s, Jan 9, 1937.

WATER-QUALITY RECORDS

PERIOD OF RECORD - Oct 1969 to Jul 1992, Nov 1992 to current year. National Stream-Quality Accounting Network station Oct 1974 to Sep 1986. Ambient Water-Quality Monitoring Network station Oct 1969 to Jul 1992, Nov 1992 to current year. Discrete suspended and bed material sediment collection Oct 1947 to current year.

PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Feb 2006 to current year (Seasonally). pH: Feb 2006 to Sep 2007. WATER TEMPERATURE: May 1984 to Dec 1984, Jul 1985 to Sep 1985, Apr 1986 to Sep 1986, Feb 2006 to current year (Seasonally). DISSOLVED OXYGEN: May 1984 to Nov 1984, Jul 1985 to Sep 1985, Ap 1986 to Sep 1986, Feb 2006 to current year (Seasonally). TURBIDITY: Feb 2006 to current year (Seasonally). SUSPENDED-SEDIMENT CONCENTRATION: Oct 2008 to current year. SUSPENDED-SEDIMENT LOAD: Oct 2008 to current year.

REMARKS -

SPECIFIC CONDUCTANCE: For Water Year 2021, record rated excellent except for the following periods: Mar 26 – May 5, rated good; May 6-18, rated fair; Jun 14-24, Jul 17-19, rated poor.

WATER TEMPERATURE: For Water Year 2021, record rated excellent.

DISSOLVED OXYGEN: For Water Year 2021, record rated excellent.

TURBIDITY: For Water Year 2021, record rated excellent except for the following periods: Dec 15 - Mar 8, rated good.

Interruptions or periods of missing record may be due to instrument failure, ice conditions, or data corrections exceeding allowable criteria, which were deleted.

SUSPENDED-SEDIMENT: For Water Year 2017, record fair except for estimated days, which are poor.

EXTREMES FOR PERIOD OF RECORD -

SPECIFIC CONDUCTANCE: Maximum recorded, 1,010 uS/cm, Jan 16, 2017, but may have been higher during periods of missing record; minimum recorded 277 uS/cm, Mar 18, 2019.

pH: Maximum recorded, 8.8 standard units, Jun 15-19, Aug 24-25, Oct 10, 2006; minimum recorded, 7.6 standard units, May 6-11, 24-27, 2007.

WATER TEMPERATURE: Maximum recorded, 31.3 °C, Jul 30, 2021; minimum recorded, -0.2 °C, Jan 16, 30, Feb 10, 16, 18, 2007, Jan 2, 17-18, 2008, several days, 2015.

DISSOLVED OXYGEN: Maximum recorded 14.4 mg/L, Jan 3, 2021; minimum recorded, 1.0 mg/L, Jul 21, 1985, but may have been lower during periods of missing record.

TURBIDITY: Maximum recorded, 1990 FNU, May 6, 2007, but may have been higher during periods of missing record; minimum recorded, 1.3 FNU, Jan 1, 2018, but may have been lower during periods of missing record; .

EXTREMES FOR PERIOD OF DAILY RECORD -

SPECIFIC CONDUCTANCE: Maximum daily, 974 uS/cm, Dec 20, 2016, but may have been higher during periods of missing record; minimum daily, 278 uS/cm, Mar 18, 2019.

pH: Maximum daily, 8.8 standard units, Jun, 16, 18, 2006; minimum daily, 7.6 standard units, May 7-10, 25-26, 2007.

WATER TEMPERATURE: Maximum daily, 31.0 °C, Jul 30, 2021; minimum daily, -0.2 °C, several days, 2015.

DISSOLVED OXYGEN: Maximum daily, 14.3 mg/L, Jan 3, 2021, but may have been higher during periods of missing record; minimum daily, 1.8 mg/L, Jul 21, 1985, but may have been lower during periods of missing record.

TURBIDITY: Maximum daily, 1,780, May 7, 2007, but may have been higher during periods of missing record; minimum daily, 2.2 FNU, Jan 17, 2018, but may have been lower during periods of missing record.

SUSPENDED-SEDIMENT CONCENTRATION: Maximum daily, 4,050 mg/L, Jun 5, 2014; minimum daily, 60.3 mg/L, Dec 20, 2016. SUSPENDED-SEDIMENT DISCHARGE: Maximum daily, 1,370,000 tons, Jun 5, 2014; minimum daily, 4,530 tons (estimated), Feb 25, 2013.