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USGS Water-Year Summary 2024
06911000 MARAIS DES CYGNES R AT MELVERN, KS
LOCATION - Lat 38°30'58", long 95°41'46" referenced to North American Datum of 1983, in NE 1/4 SW 1/4 NE 1/4 sec.01, T.18 S., R.15 E., Osage County, KS, Hydrologic Unit 10290101, on left bank of downstream side of bridge on US 75 highway, 0.7 mi downstream of the Melvern Lake spillway, and at mile 447.0.
DRAINAGE AREA - 351 mi².
REVISIONS HISTORY - WSP 1340: 1940, 1946, 1950(P).
SURFACE-WATER RECORDS
PERIOD OF RECORD - September 1939 to September 1974. October 2013 to current year. Prior to October 1948, published as Osage River at Melvern.
GAGE - Water-stage recorder. Datum of gage is 947.65 ft above NGVD of 1929. Sept. 16, 1939, to Apr. 8, 1958, nonrecording gage and Apr. 9, 1958, to Aug. 25, 1963, water-stage recorder, at site 4.4 mi downstream at datum 8.54 ft lower.
REMARKS - Satellite telemeter at station. Since August 1972, flow completely regulated by Melvern Lake (see sta 06910997).
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 68,500 ft³/s July 11, 1951, gage height, 30.8 ft, from floodmarks, site and datum then in use, from rating curve extended above 19,000 ft³/s on basis of contracted-opening measurement of peak flow.
