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Water-Year Summary for Site 06856000

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

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USGS Water-Year Summary 2023
LOCATION - Lat 39°35'19", long 97°39'29" referenced to North American Datum of 1927, in SW 1/4 SW 1/4 NE 1/4 sec.28, T.5 S., R.3 W., Cloud County, KS, Hydrologic Unit 10250017, on right bank at downstream side of bridge on U.S. Highway 81, 1.0 mi north of Concordia, 4.9 mi downstream from Buffalo Creek, and at mile 98.5.
DRAINAGE AREA - 23,560 mi² of which 7,500 mi² probably is noncontributing.
REVISIONS HISTORY - WSP 1340: 1946-47.
PERIOD OF RECORD - October 1945 to current year. Monthly discharge only for some periods, published in WSP 1310. Gage-height records collected at nearby sites since 1951 are contained in reports of U.S. Weather Bureau.
GAGE - Water-stage recorder. Datum of gage is 1329.39 ft. above mean sea level(NAVD88). Datum of gage was 1,328.62 ft above NGVD of 1929. Apr. 25, 1946, to Mar. 3, 1983, at site about 100 ft downstream, datum 5.0 ft higher. Apr. 11, 1983, to Sept. 30, 1987, at present site, at datum 5.0 ft higher. June 22, 1998, gage moved for bridge construction to right bank on downstream side of bridge, at same datum. Peak of record flow occurred June 25, 1947 with a discharge of 75,000 cfs and corresponding stage of 14.90 ft.
REMARKS - Natural flow affected by irrigation development upstream from station and by storage in seven reservoirs in Colorado, Nebraska, and Kansas. Considerable regulation since 1952 by Harlan County Lake (station 06849000). Flow was affected by bridge construction May 1998 to June 1999. Satellite telemeter at station.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage known since at least 1895, about 23 ft, June 2, 1935, present site and datum, from information by U.S. Weather Bureau, discharge, about 207,000 ft³/s, on basis of records for stations upstream. Flood of June 21, 1915, reached a stage of 19.1 ft, present site and datum, from information by U.S. Weather Bureau, discharge, about 60,000 ft³/s.