USGS Water-Year Summary 2019
14034490 WILLOW CREEK LAKE AT HEPPNER, OR
LOCATION - Lat 45°20'50", long 119°32'37" referenced to North American Datum of 1927, in NW 1/4 SE 1/4 sec.35, T.2 S., R.26 E., Morrow County, OR, Hydrologic Unit 17070104, U.S. Army Corps of Engineers land, on top left side of spillway on dam on Willow Creek, 2,000 ft upstream from Court Street bridge and at mile 52.4.
DRAINAGE AREA - 96.6 mi².
PERIOD OF RECORD - February 1983 to current year.
GAGE - Water-stage recorder. Datum of gage is NGVD of 1929 (levels by U.S. Army Corps of Engineers). Prior to Dec. 22, 1983, nonrecording gage at nearby site at present datum.
COOPERATION - Capacity table furnished by U.S. Army Corps of Engineers.
EXTREMES FOR PERIOD OF RECORD - Maximum contents, 9,120 acre-ft June 6, 2011, elevation, 2,092.44 ft; no usable contents at times.