USGS Water-Year Summary 2022
12338300 NORTH FORK BLACKFOOT RIVER ABOVE DRY GULCH, NEAR OVANDO, MT
LOCATION - Lat 46°58'46.18", long 113°05'31.87" referenced to North American Datum of 1983, in NW 1/4 SW 1/4 SW 1/4 sec.11, T.14 N., R.12 W., Powell County, MT, Hydrologic Unit 17010203, on right downstream wingwall of the county road bridge, 0.8 mi upstream from Dry Gulch, 3.2 mi southeast of Ovando, and at river mile 2.5.
DRAINAGE AREA - 310 mi².
PERIOD OF RECORD - October 1997 to October 2017, July 2018 to current year.
GAGE - Water-stage recorder. Elevation of gage is 4,060 ft, referenced to the North American Vertical Datum of 1988. Prior to August 29, 2018 at site 400 ft upstream and 4.00 ft lower datum.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of June 8, 1964 reached a discharge of 11,800 ft³/s, from slope-area measurement of peak flow, as determined at North Fork Blackfoot River near Ovando (station 12338000), 9 mi upstream. Flood of May 22, 1948 reached a discharge of about 4,380 ft³/s, from slope-area measurement of peak flow at same site.
PERIOD OF RECORD - September 1995 to September 2013.
PERIOD OF DAILY RECORD -
WATER TEMPERATURE: April 2001 to September 2002.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum 17.5°C, Aug. 6 and 7, 2001; minimum, 0.0°C, several days in February and March 2002.