USGS Water-Year Summary 2024

06154100 MILK RIVER NEAR HARLEM, MT

LOCATION - Lat 48°29'22.71", long 108°45'32.22" referenced to North American Datum of 1983, in NE 1/4 SE 1/4 NE 1/4 sec.32, T.32 N., R.23 E., Blaine County, MT, Hydrologic Unit 10050004, Fort Belknap Indian Reservation, on right bank 30 ft downstream from U.S. Highway 2 bridge, 0.6 mi northeast of unincorporated community of Fort Belknap Agency, 3.5 mi southeast of Harlem, and at river mile 332.2.

DRAINAGE AREA - 9,652 mi² of which 691 mi² probably is noncontributing.

REVISIONS HISTORY - Water Supply Paper 1729: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1959 to September 1969, October 1982 to current year (seasonal record beginning 1994 water year). Gage heights only for period Apr. 3-25, 1952, published as "at Fort Belknap" in 1260-B.

GAGE - Water-stage recorder. Elevation of gage is 2,319.48 ft, referenced to the National Geodetic Vertical Datum of 1929. Apr. 3-25, 1952, nonrecording gage on old bridge 200 ft downstream at different elevation. Nov. 1, 1959, to Mar. 12, 1968, nonrecording gage or water-stage recorder at several sites within 0.5 mi of present site at different elevation.

REMARKS - Flow increased during irrigation season by water from St. Mary Canal (station number 05018500). Flow is mainly regulated by Fresno Reservoir (station number 06136500) beginning in 1939. Numerous diversions for irrigation occur upstream from station.

EXTREMES OUTSIDE PERIOD OF RECORD - Flood of April 1952 reached a stage of about 23.5 ft, present site and elevation.