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Water-Year Summary for Site USGS 06774000

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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)  
00065 Gage height(Mean)  

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

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USGS Water-Year Summary 2021
06774000 Platte River near Duncan, Nebr.
LOCATION - Lat 41°22'06", long 97°29'43" referenced to North American Datum of 1983, in SE 1/4 SW 1/4 sec.12, T.16 N., R.2 W., Platte County, NE, Hydrologic Unit 10200103, on left bank near northwest corner of county bridge, 1.5 mi south of Duncan, 15.3 mi upstream from Loup River, and at mile 114.
DRAINAGE AREA - 59,300 mi² of which 4,670 mi² probably is noncontributing.
REVISIONS HISTORY - WSP 956: 1935. WSP 1390: 1897, 1899-1901, 1903-05, 1929-32, 1935(M), 1936. WDR NE-94-1: Drainage area.
PERIOD OF RECORD - June 1895 to December 1909 (irrigation seasons only 1895-1900). July 1910 to December 1911 (gage heights and discharge measurements only), April 1912 to September 1915, June 1928 to current year. Published as "near Columbus" 1895-1915.
GAGE - Water-stage recorder with satellite telemetry. Datum of gage is 1,476.82 ft above National Geodetic Vertical Datum of 1929. June 1895 to December 1909, April 1912 to September 1915, and June to October 1928, non-recording gage at site 7 mi downstream at different datums. Oct. 25, 1928 to Feb. 20, 1935, non-recording gage, and Feb. 20, 1935 to Mar. 21, 1984, recording gage, both at present site and at datum 2.00 ft higher. Mar. 22, 1984 to Mar. 4, 1987, at site 300 ft downstream at present datum.
REMARKS - Accuracy of records for water years prior to 2014 are noted in the individual Annual Data Reports for those water years. For water years 2014 onward, records fair except for estimated daily discharges, which are poor, unless otherwise noted. Natural flow of stream affected by transmountain diversions, storage reservoirs, power developments, groundwater withdrawals and diversions for irrigation, and return flow from irrigated areas.
EXTREMES FOR PERIOD OF RECORD - Prior to closure of Kingsley Dam in 1941, maximum discharge observed, 44,100 ft³/s, June 23, 1905, gage height, 6.50 ft, site and datum then in use; no flow at times in 1896, 1902, 1904-5, 1910-11, 1913-14, 1928, all at site downstream, 1931, 1933-41, at present site. Since beginning of storage in Lake McConaughy in 1942, maximum peak flow, 25,400 ft³/s, March 28, 1960, gage height, 6.36 ft, datum then in use; maximum peak gage height, 8.04 ft, March 16, 2019, backwater from ice.