USGS Water-Year Summary 2019
13341050 CLEARWATER RIVER NEAR PECK, ID
LOCATION - Lat 46°30'01", long 116°23'33" referenced to North American Datum of 1983, in NE 1/4 NE 1/4 sec.01, T.36 N., R.1 W., Nez Perce County, ID, Hydrologic Unit 17060306, Southwick quad., on left bank 5 mi downstream from Dworshak Dam, 2 mi upstream from Big Canyon Creek, 2.2 mi northeast of Peck, 3 mi downstream from North Fork Clearwater River, and at mile 37.4.
DRAINAGE AREA - 7,976 mi².
- WDR-US-2010: Drainage area.
PERIOD OF RECORD - October 1964 to current year.
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is arbitrary.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of June 8, 1964, reached a stage of 23.95 ft, from floodmark, discharge, 118,000 ft³/s, from rating extended above 89,100 ft³/s.
EXTREMES FOR PERIOD OF RECORD - UNREGULATED PERIOD (1965-71): Maximum discharge prior to regulation by Dworshak Reservoir, 107,000 ft³/s May 13, 1971, maximum gage height, 25.00 ft, Dec. 28, 1967, result of ice jam; minimum, 1,630 ft³/s Nov. 30. 1969, gage height, 2.70 ft.
REGULATED PERIOD (1972 to current year): Maximum discharge since regulation began, 127,000 ft³/s June 16, 1974, gage height, 23.66 ft; minimum, 1,260 ft³/s Oct. 31, 1971, gage height, 2.24 ft.
PERIOD OF RECORD -
Continuous water temperature: Oct. 1964 to Sept. 1984, Oct. 1985 to current year.
Continuous total dissolved gas: April 2009 to current year (seasonal record only).
EXTREMES FOR PERIOD OF RECORD -
Water Temperature: Maximum, 25.0 °C Aug. 1-2, 1965; minimum, 0.0 °C many days during winter months.
Total Dissolved Gas: Maximum recorded, 118 percent saturation, many days July and August 2017; minimum, 95 percent saturation, February 10, 2017, but may have been higher or lower during periods of missing records.