USGS Water-Year Summary 2023
12359800 SOUTH FORK FLATHEAD RIVER ABOVE TWIN CREEK, NEAR HUNGRY HORSE, MT
LOCATION - Lat 47°58'44.75", long 113°33'38.46" referenced to North American Datum of 1983, in NE 1/4 NW 1/4 NE 1/4 sec.36, T.26 N., R.16 W., Flathead County, MT, Hydrologic Unit 17010209, Flathead National Forest, on left bank 0.1 mi downstream from Tin Creek, 0.4 mi upstream from Twin Creek, 36.3 mi southeast of Hungry Horse, and at river mile 42.2.
DRAINAGE AREA - 1,159 mi².
PERIOD OF RECORD - October 1964 to September 1982, October 1984 to current year (no winter records).
GAGE - Water-stage recorder. Elevation of gage is 3,575 ft, referenced to the North American Vertical Datum of 1988. Bureau of Reclamation satellite telemeter is located at the station.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of June 8, 1964, reached a stage of 20.87 ft, from high-water profile; discharge, 50,900 ft³/s, by slope-area measurement of peak flow.