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LOCATION.--Lat 43° 46'54", long 116° 58'17", in SE1/4 NE1/4 SE1/4 sec.7,
T.5 N., R.5 W., Canyon County, Hydrologic Unit 17050114, on left bank,
at county road crossing, 1.2 mi west of Parma, and at mile 3.8.
DRAINAGE AREA.--3,970 mi2, approximately.
PERIOD OF RECORD.--March 1938 to June 1939 (gage heights only), September 1971
to September 1997, October 2002 to current year.
GAGE.--Water-stage recorder. Datum of gage is 2196.49 ft above NGVD of 1929
(levels by Idaho Department of Highways). March 1938 to June 1939, nonrecording
gage at site 1.4 mi upstream at different datum.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 9,240 ft3/s June 14, 1983,
gage height, 13.83 ft; minimum 60 ft3/s April 18, 19, 1987, gage height, 5.88 ft.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of April 20, 1947 reached a discharge of
about 20,000 ft3/s.
Station operated with funding provided by the U.S. Geological Survey
National Streamflow Information Program (NSIP).
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