USGS Water-Year Summary 2022
06151500 BATTLE CREEK NEAR CHINOOK, MT
LOCATION - Lat 48°38'58.17", long 109°13'54.10" referenced to North American Datum of 1983, in NW 1/4 SW 1/4 NE 1/4 sec.3, T.33 N., R.19 E., Blaine County, MT, Hydrologic Unit 10050008, on left bank, 4 mi north of Chinook, and at river mile 14.
DRAINAGE AREA - 1,631 mi² of which 163 mi² probably is noncontributing.
Water Data Report 2006: Drainage area. Revision: Maximum discharge for water year 2017 was revised June 8, 2020 based on audit findings.
PERIOD OF RECORD - April 1905 to September 1921, June 1984 to current year (seasonal records only). Monthly discharge only for some periods was published in Water Supply Paper 1309. Site was published as "North Fork Milk River near Chinook" prior to 1913.
GAGE - Water-stage recorder. Elevation of gage is 2,410 ft, referenced to the North American Vertical Datum of 1988. Apr. 22, 1905 to Apr. 8, 1918, chain gage located 100 ft downstream, and Apr. 9, 1918 to Sept. 30, 1921, chain gage located on bridge 600 ft downstream at same elevation but different from present elevation.