USGS Water-Year Summary 2023
06177500 REDWATER RIVER AT CIRCLE, MT
LOCATION - Lat 47°24'50.30", long 105°34'32.32" referenced to North American Datum of 1983, in SW 1/4 SW 1/4 sec.11, T.19 N., R.48 E., McCone County, MT, Hydrologic Unit 10060002, on left bank at Circle, 1 mi upstream from Horse Creek, and at river mile 110.2.
DRAINAGE AREA - 551 mi².
REVISIONS HISTORY - WSP 1006: 1929-30, 1932-33, 1935-39. WSP 1509: 1929, 1934. WSP 1729: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - April to November 1929, March to November 1930, July 1931 to December 1932, March to June 1933, February to November 1934, April 1935 to December 1936, April 1937 to June 1972, October 1974 to September 2004, October 2009 to current year. Monthly discharge only for some periods, published in WSP 1309. Prior to October 1967, published as Redwater Creek at Circle.
GAGE - Water-stage recorder. Sharp-crested weir since Sept. 24, 1938. Elevation of gage is 2,394.32 ft, referenced to the National Geodetic Vertical Datum of 1929 (levels by U.S. Army Corps of Engineers). Prior to June 1, 1941, and Mar. 23, 1943, to Feb. 16, 1948, nonrecording gage at site 0.3 mi upstream at same elevation. June 1, 1941 to Mar. 22, 1943, nonrecording gage at site 200 ft upstream at elevation 2.8 ft lower. Feb. 26, 1948 to May 7, 1950, nonrecording gage at site 200 ft upstream at present elevation.
