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Water-Year Summary for Site 06810000

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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
00060 Discharge(Mean)  

Water year 2020: 2019-10-01 to 2020-09-30

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USGS Water-Year Summary 2020
06810000 Nishnabotna River above Hamburg, IA
LOCATION - Lat 40°36'06", long 95°38'42" referenced to North American Datum of 1983, in NE 1/4 SW 1/4 SE 1/4 sec.11, T.67 N., R.42 W., Fremont County, IA, Hydrologic Unit 10240004, on left bank on downstream side of bridge on U.S. Highway 275 and State Highway 333 in Hamburg, 4.7 mi downstream from confluence of East Nishnabotna River and West Nishnabotna River, and 11.0 mi upstream from mouth.
DRAINAGE AREA - 2,806 mi².
REVISIONS HISTORY - WSP 1240: 1923, 1929-1937, 1938-1940(M), 1943(M). WSP 1440: Drainage area. WDR IA-74-1: 1973. WDR US-2008: Location.
PERIOD OF RECORD - Discharge records from March 1922 to September 1923, October 1928 to current year. March 1922 to September 1923, monthly mean discharge for some periods published in WSP 1310.
GAGE - Water-stage recorder. Datum of gage is 894.17 ft above National Geodetic Vertical Datum of 1929. Prior to October 1, 1923, non-recording gage at site 3.5 mi downstream at different datum; October 5, 1928, to September 6, 1929, non-recording gage at site 2.7 mi upstream at datum 0.42 ft higher; September 7, 1929, to June 5, 1947, non-recording gage at site 2.5 mi upstream at same datum; June 6 to July 22, 1947, non-recording gage at site 2.7 mi upstream at different datum; July 23, 1947, to November 16, 1950, non-recording gage, and November 17, 1950, to October 2, 2007, water-stage recorder, both at site 2.5 mi upstream at same datum.
REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS IA Water Science Center.
PERIOD OF RECORD - Water years 1979-1993, 2004 to 2014.
SPECIFIC CONDUCTANCE: Daily instantaneous, October 1979 to September 1981.
WATER TEMPERATURE: Daily instantaneous, October 1979 to September 1981.
SUSPENDED-SEDIMENT DISCHARGE: April 1939 to September 1951, records provided by U.S. Army Corps of Engineers.