| |
LOCATION.--Lat 46° 28'42", long 116° 15'27"(revised), in SW1/4 SE1/4 NW1/4
sec.7, T.36 N., R.2 E., Clearwater County, Hydrologic Unit 17060306,
on right bank 56 ft upstream from State Highway 7 bridge at Orofino,
and at mile 44.6.
DRAINAGE AREA.--5,580 mi2, approximately.
PERIOD OF RECORD.--October 1930 to September 1938, October 1964 to
current year.
GAGE.--Datum of gage is 990.80 ft above NGVD of 1929 (levels by Idaho
Department of Highways). Prior to Sept. 30, 1938, nonrecording gage at
site 0.1 mi downstream at different datum.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 87,300 ft3/s
June 2, 1972, gage height, 18.84 ft, present datum;
minimum observed, probably less than 250 ft3/s Jan. 8, 1937,
during period of ice effect;
minimum gage height, 1.96 ft, Nov. 30, 1979.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of June 8, 1964, reached a stage
of 20.32 ft, present site and datum, discharge, 99,700 ft3/s.
Station operated in cooperation with U.S. Army Corps of Engineers.
|
|
