USGS Water-Year Summary 2018
06080900 Sun River below Diversion Dam, near Augusta MT
LOCATION - Lat 47°37'06.62", long 112°41'31.40" referenced to North American Datum of 1983, Lewis and Clark County, MT, Hydrologic Unit 10030104, Lewis and Clark National Forest, on road bridge 1 mile (1.6 km) downstream from diversion dam, 16.5 miles northwest of Augusta, MT, and at mile 95.6 (153.8 km).
DRAINAGE AREA - 610 mi².
PERIOD OF RECORD - September 1967 to October 1980, April 2016 to current year (seasonal records only).
GAGE - Water-stage recorder. Elevation of gage is 4,370 feet, referenced to the North American Vertical Datum of 1988. From October 1967 to October 1980 a recording gage was present at this site. From October 1985 to April 2016, a non-recording gage was present and multiple miscellaneous measurements were made during this time period.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum discharge known, 59,700 ft³/s June 9, 1964, from computation of peak flow over dam 1 mile upstream; gage height, about 24.8 feet, from levels of Aug. 12, 1971.