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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.
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USGS Water-Year Summary 2024
14299800 NEHALEM RIVER NEAR VERNONIA, OR
LOCATION - Lat 45°48'26", long 123°16'55" referenced to North American Datum of 1927, in NE 1/4 NE 1/4 sec.27, T.4 N., R.5 W., Columbia County, OR, Hydrologic Unit 17100202, on left bank, 6.75 mi southwest of Vernonia and at mile 100.7.
DRAINAGE AREA - 69.78 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - July 2001 to current year.
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is 640 ft above NGVD of 1929, from topographic map.
REMARKS - No known regulation or diversion upstream from station.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Feb. 8, 1996, reached a stage of about one foot lower than that of Dec. 3, 2007, according to knowledgeable local resident; discharge about 15,100 ft³/s, from rating curve extended above 9,400 ft³/s on basis of slope-area measurement of peak flow.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 17,600 ft³/s Dec. 3, 2007, gage height, 18.61 ft, from rating curve extended above 9,400 ft³/s on basis of slope-area measurement of peak flow; maximum gage height, 19.13 ft Dec. 3, 2007; minimum discharge, 1.3 ft³/s Sept. 6, 8, 9, 2006, Sept. 12, 13, 2007.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - PRECIPITATION: October 2009 to February 2014, October 2015 to current year.
INSTRUMENTATION - Unshielded, standard 8-in diameter, tipping-bucket precipitation gage, mounted atop gage shelter with top of collector 20 ft above land surface.
REMARKS - PRECIPITATION: Collection, computation, and publication of precipitation data do not necessarily conform to standards used by the National Weather Service. Records published in this report are for general scientific use.
