LOCATION.--Lat 47° 16'29", long 116° 11'17" (NAD27), in NW1/4 NW1/4 SE1/4 sec.3, T.45 N., R.2 E., Shoshone County, Calder quad., Hydrologic Unit 17010304, on right bank, 125 ft downstream from road bridge at Calder, and at mile 42.9.

DRAINAGE AREA.--1,025 mi², revised.

PERIOD OF RECORD.--April 1911 to September 1912 (published as "near Calder"), July 1920 to current year.

REVISED RECORDS.--WSP 1182: Drainage area.

GAGE.--Datum of gage is 2,171.76 ft above NGVD of 1929. Apr. 14, 1911 to Sept. 30, 1912, nonrecording gage at site 2.5 mi downstream at different datum. Nonrecording gage at present site July 13 to Dec. 21, 1920, water-stage recorder at present site thereafter. Datum July 13, 1920 to Sept. 30, 1966, 75 ft lower than present datum, and datum Oct. 1, 1966 to Aug. 14, 1972, 15 ft lower than present datum.

EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 53,000 ft³/s Dec. 23, 1933, computed on basis of slope between gages downstream; maximum gage height, 18.1 ft, Apr. 18, 1938, from floodmark, present datum; minimum discharge, 87 ft³/s Nov. 29, 1979; minimum gage height, 3.43 ft, Dec. 5, 1928, present datum.