USGS Water-Year Summary 2024
06902000 GRAND RIVER NEAR SUMNER, MO
LOCATION - Lat 39°38'24.1", long 93°16'25.3" referenced to North American Datum of 1983, in NE 1/4 sec.29, T.56 N., R.21 W., Livingston County, MO, Hydrologic Unit 10280103, near right bank on downstream side of pier of bridge on State Highway 139, 240 ft downstream from Chicago, Burlington and Quincy Railroad Bridge, 2.0 mi southwest of Sumner, 2.5 mi downstream from Locust Creek, and at mile 41.0.
DRAINAGE AREA - 6,880 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - Oct 1924 to current year. Prior to Apr 1924 monthly discharge only, published in WSP 1310.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 631.35 ft. above North American Vertical Datum of 1988. Prior to Jul 11, 1926, nonrecording gage at site 200 ft upstream at same datum; Jul 11, 1926, to Jul 9, 1939, nonrecording gage at same site and datum; Jul 10, 1939, to Aug 8, 1952, water-stage recorder at site 200 ft upstream at same datum; Aug 9, 1952, to Nov 12, 1953, nonrecording gage at site 120 ft upstream and at same datum; Nov 13, 1953, to Jul 6, 1964, water-stage recorder and nonrecording gage, for stages below 8.3 ft, at site 120 ft upstream and at same datum; Jul 7, 1964, to May 26, 1965, nonrecording gage at present site and datum. Auxiliary water-stage recorder at site 3.2 mi downstream from base gage at datum 630.84 ft above North American Vertical Datum of 1988; Mar 15, 1939, to Aug 4, 1942, auxiliary nonrecording gage at various sites; Aug 5, 1942, to Dec 14, 1956, auxiliary nonrecording gage at present site.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Aug 1962 to Jun 1963, Aug 1967 to current year.
PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Jan 1974 to Sep 1981. Mar to Dec 2017. WATER TEMPERATURE: Jan 1974 to Sep 1981, Mar to Dec 2017. TURBIDITY: Mar to Dec 2017.
INSTRUMENTATION - Water-quality monitor operated seasonally since March 2017 and Nitrate monitor operated seasonally since June 2017. U.S.G.S. satellite telemeter at station.