USGS Water-Year Summary 2023
13066000 BLACKFOOT RIVER NEAR SHELLEY, ID
LOCATION - Lat 43°15'46", long 112°02'52" referenced to North American Datum of 1983, in sec.07, T.2 S., R.38 E., Bingham County, ID, Hydrologic Unit 17040207, Goshen quad., on right bank 1.2 mi downstream from Wolverine Creek, 8.5 mi southeast of Shelley, and at mile 30.5.
DRAINAGE AREA - 897 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - July 1909 to November 1926, May 1927 to September 1950 (irrigation seasons only, monthly means, furnished by the Office of Indian Affairs), August 1975 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 4,645.56 feet above NAVD 1988 (USGS). Prior to Aug. 19, 1975, at nearby site at different datum.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 3,220 ft³/s May 16, 1987, gage height, 9.10 ft, from flood; maximum gage height, 19.97 ft, Nov. 29, 1975, backwater from ice; minimum observed, 15 ft³/s, Jan. 23, 1919, gage height , 2.83 ft, site and datum then in use.