Warning: Javascript must be enabled to use all the features on this page!

Page Loading - Please Wait...

Click to hideNews Bulletins

Water-Year Summary for Site 14092050

Click to hide Water-Year Summary instructions and information
  • 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

Print this page
USGS Water-Year Summary 2019
LOCATION - Lat 44°35'05", long 121°22'15" referenced to North American Datum of 1927, in NE 1/4 SE 1/4 sec.26, T.11 S., R.11 E., Jefferson County, OR, Hydrologic Unit 17070301, on right bank of Metolius River arm of Lake Billy Chinook, 0.8 mi east of Fly Creek and 3.8 mi northwest of Grandview.
DRAINAGE AREA - 7,490 mi². approximately.
PERIOD OF RECORD - October 2005 to current year.
GAGE - Water-stage recorder. Datum of gage is NGVD of 1929 (established by Portland General Electric Co.). Prior to Oct. 1, 2009, datum of gage was reported as NGVD of 1929, but datum was found to be 0.129 ft higher.
REMARKS - Reservoir is formed by rock fill dam completed in June 1964 by Portland General Electric Co. Total capacity, 534,700 acre-ft at elevation 1,945.0 ft (proposed upper limit of operation). Active capacity, 273,900 acre-ft between elevations 1,860.0 ft (proposed lower limit of operation) and 1,945.0 ft. Lake's primary purposes are hydropower, water quality improvement, irrigation, fish and wildlife habitat, recreation, and increasing flows in the upper Deschutes basin.
EXTREMES FOR PERIOD OF RECORD - Maximum elevation, 1,945.24 ft June 5, 2010; minimum elevation, 1,936.46 ft Nov. 25, 2010.