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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.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
15875000 COLVILLE RIVER AT UMIAT, AK
LOCATION - Lat 69°21'37.8", long 152°07'21.7" referenced to North American Datum of 1983, in SE 1/4 SE 1/4 NW 1/4 sec.16, T.1 S., R.1 W., North Slope Borough, AK, Hydrologic Unit 19060303, on left bank, 1 mile upstream from Seabee Creek, and 1.0 mile east of Umiat.
DRAINAGE AREA - 13,860 mi².
REVISIONS HISTORY - On June 17, 2013, daily discharges, peak discharges and annual maximums for water years 2002 through 2005 and 2011 (2002 maximum only) were revised. They supersede figures previously published in Water-Data Reports WDR-AK-03-1, WDR-AK-04-1, WDR-AK-05-1 and WDR-US-2011.
SURFACE-WATER RECORDS
PERIOD OF RECORD - August 2002 to current year.
GAGE - Water-stage recorder. Datum of gage is 206.78 ft NAVD88.
REMARKS - Winter records may contain periods of ponded water beneath ice cover within the gage pool but with no discernible flow. GOES satellite telemetry at station.
EXTREMES FOR PERIOD OF RECORD - 268,000 ft³/s, 59.94 ft May 21, 2015.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - Air Temperature, October 2006 to September 2007. Rainfall, June 2007 to September 2007. Discontinued.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 1953, 1969, 1975, 1978, 2002 to 2008.
