PROVISIONAL DATA SUBJECT TO REVISION

LOCATION.--Lat 43° 59'54", long 114° 01'16", in NE1/4 NW1/4 sec.30, 
T.8 N., R.21 E., Custer County, Hydrologic Unit 17040218, on left bank at 
Howell Ranch, 2.1 mi downstream from Burnt Creek, 7.7 mi downstream from 
East Fork, 9 mi southwest of Chilly, and 21 mi northwest of Mackay.

DRAINAGE AREA.--450 mi2. Mean elevation, 8,590 ft.

PERIOD OF RECORD.--April 1904 to November 1914, May 1920 to current year 
(no winter records 1904, 1906-14, 1920-48).

REVISED RECORDS.--WSP 1287: Drainage area. WSP 1317: 1905.

GAGE.--Datum of gage is 6,621.95 ft above NGVD of 1929. See WSP 1737 for 
history of changes prior to June 11, 1920.

REMARKS.--No regulation. Diversions above station for irrigation of about 
3,000 acres (1966 determination).

EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 4,420 ft3/s May 25, 1967, 
gage height, 6.02 ft; minimum observed, 19 ft3/s Dec. 12, 1939, from 
discharge measurement.

Station operated in cooperation with Idaho Department of Water Resources, Big Lost Irrigation District, and U.S. Department of Energy.