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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
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USGS Water-Year Summary 2024
14020850 UMATILLA RIVER AT WEST RESERVATION BOUNDARY, NEAR PENDLETON, OR
LOCATION - Lat 45°40'18", long 118°44'08" referenced to North American Datum of 1927, in NE 1/4 NW 1/4 sec.07, T.2 N., R.33 E., Umatilla County, OR, Hydrologic Unit 17070103, on left bank, 0.5 mi east of west line of boundary for Umatilla Indian Reservation, 1.6 mi upstream from Wildhorse Creek, 2.5 mi east of post office in Pendleton and at mile 58.3.
DRAINAGE AREA - 441 mi². revised.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1995 to current year.
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is 1,130 ft above NGVD of 1929, from topographic map.
REMARKS - No known regulation. Many diversions for irrigation upstream from station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 25,000 ft³/s Feb. 6, 2020, gage height, 14.28 ft, from high-water mark; minimum discharge, 20 ft³/s Aug. 3, 4, 2007.
