USGS Water-Year Summary 2020
13088000 SNAKE RIVER AT MILNER, ID
LOCATION - Lat 42°31'41", long 114°01'04" referenced to North American Datum of 1927, in SW 1/4 NE 1/4 sec.29, T.10 S., R.21 E., Twin Falls County, ID, Hydrologic Unit 17040212, Milner quad., on left bank 200 ft downstream from highway bridge at Milner, 0.4 mi downstream from Milner Dam, and at mile 638.7.
DRAINAGE AREA - 17,180 mi². approximately, excluding indeterminate nontributary area on Snake River Plain.
- WSP 1347: 1909-12, 1915-16, 1942-44, 1946-48.
PERIOD OF RECORD - May 1909 to current year. Monthly discharge only for some periods, published in WSP 1317.
GAGE - Water-stage recorder. Elevation of gage datum is arbitrary. Prior to May 28, 1919, nonrecording gages at slightly different sites and datums.
COOPERATION - Discharge records furnished by Idaho Power and by U.S. Geological Survey beginning October 2003. Record approval by U.S. Geological Survey.
EXTREMES FOR PERIOD OF RECORD - UNREGULATED PERIOD (1909-1926): Maximum discharge prior to regulation by American Falls Dam, 40,000 ft³/s June 21, 1918, gage height, 19.9 ft, site and datum then in use; minimum daily, 8.0 ft³/s Aug. 22, 1924.
REGULATED PERIOD (1927 to current year): Maximum daily discharge since regulation began in 1927, 31,200 ft³/s June 21, 1997; minimum daily, 0.0 ft³/s on many days.