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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
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USGS Water-Year Summary 2024
06837000 Republican River at McCook, Nebr.
LOCATION - Lat 40°11'16", long 100°37'07" referenced to North American Datum of 1983, in SW 1/4 NE 1/4 sec.32, T.3 N., R.29 W., Red Willow County, NE, Hydrologic Unit 10250004, on left bank at downstream side of bridge on U.S. Highway 83 at south edge of McCook, 2.5 mi downstream from Driftwood Creek, 10.5 mi upstream from Red Willow Creek, and at mile 348.
DRAINAGE AREA - 12,240 mi² of which 6,020 mi² probably is noncontributing.
REVISIONS HISTORY - WDR NE-94-1: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1930 to June 1932, October 1954 to current year. Monthly discharge only for some periods, published in WSP 1310.
GAGE - Water-stage recorder with satellite telemetry. Datum of gage 2,457.23 ft above North American Vertical Datum of 1988 (NAVD88). October 1954 to August 16, 2017 at datum 2,456.37 ft above National Geodetic Vertical Datum of 1929 (NGVD29) . October 1930 to June 1932, non-recording gage on former highway bridge 300 ft upstream at different datum; and October 1954 to Mar. 13, 1959, on highway bridge 25 ft upstream at 2,456.37 ft above NGVD29. Mar. 13, 1959 to Mar. 29, 1988, at 2,456.37 ft above NGVD29. Mar. 29, 1988 to Oct. 31, 1989, 200 ft downstream at 2,456.37 ft above NGVD29.
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 good except for estimated daily discharges, which are poor, unless otherwise noted. Natural flow affected by surface water and groundwater irrigation development above station and by storage in Enders Reservoir (station 06832000), and Swanson Reservoir (station 06829000).
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum flood since at least 1826 occurred May 31, 1935, discharge, about 245,000 ft³/s.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 5,890 ft³/s, March 21, 1960, gage height, 9.14 ft. Maximum gage height, 10.51 ft, May 26, 2023, discharge, 4,180 ft³/s.
