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Water-Year Summary for Site 14186100

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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.
Available Parameters
62614 Elevation, lake/res, NGVD29(Obs.)  

Water year 2019: 2019-10-01 to 2020-09-30

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USGS Water-Year Summary 2019
LOCATION - Lat 44°27'00.00", long 122°32'56.40" referenced to North American Datum of 1983, in NE 1/4 SE 1/4 sec.10, T.13 S., R.2 E., Linn County, OR, Hydrologic Unit 17090006, in Green Peter Dam on Middle Santiam River, 7.0 mi northeast of Foster, and at mile 5.4.
DRAINAGE AREA - 273 mi².
PERIOD OF RECORD - October 1966 to September 2003, October 2013 to current year. Prior to October 1971, published as Green Peter Reservoir near Foster.
GAGE - Water-stage recorder. Datum of gage is NGVD of 1929 (levels by U.S. Army Corps of Engineers).
COOPERATION - Capacity table furnished by U.S. Army Corps of Engineers.
REMARKS - Reservoir is formed by concrete, gravity-type dam with ogee spillway completed in 1966 by U.S. Army Corps of Engineers; controlled storage began Oct. 6, 1966. Total capacity, 428,100 acre-ft, active capacity 330,800 acre-ft between elevations 887.0 ft, proposed lower limit of operation, and 1,015.0 ft, top of spillway gates. Lake's primary purposes are flood risk management, hydropower, water quality improvement, irrigation, fish and wildlife habitat, recreation, and improved navigation. Month-end contents and change in contents discontinued water year 2014.
EXTREMES FOR PERIOD OF RECORD - Maximum contents, 426,700 acre-ft Apr. 29, 1990, elevation, 1, 014.61 ft; minimum contents, 116,400 acre-ft Oct. 30, 2015, elevation, 898.87 ft.