| Willow Creek Dam | |
|---|---|
&sq=&lang=&file=File:Willowcr.jpg) Willow Creek Dam and Willow Creek Lake | |
| Location | Morrow County, Oregon, U.S. |
| Coordinates | 45°20′49″N 119°32′41″W / 45.34695°N 119.54463°W |
| Construction began | 1979 |
| Opening date | 1983 |
| Construction cost | $37,231,332 (as of June 18, 1997)[1] |
| Operator(s) | U.S. Army Corps of Engineers |
| Dam and spillways | |
| Impounds | Willow Creek |
| Height | 160 feet (49 m) |
| Reservoir | |
| Creates | Willow Creek Lake |
| Total capacity | gross 13,250 acre-feet (16,340,000 m3) usable 9,765 acre-feet (12,045,000 m3) |
| Catchment area | 96 square miles (250 km2) |
| Surface area | 126 acres (51 ha) max 95 acres (38 ha) min[1] |
Willow Creek Dam is a dam in Morrow County of the U.S. state of Oregon, located just east of Heppner's city limits. It was the first major dam in the United States constructed of roller-compacted concrete.[2]
The dam's drainage basin is 96 square miles (250 km2)[3] of arid rolling hills in the lower basin but with headwaters in the northern Umatilla National Forest. The dam's original purpose was primarily to store water for flood control, but also to serve recreation, fish and wildlife, and irrigation uses.[3] The dam impounds Willow Creek to create Willow Creek Lake.
The lake level can be a maximum of 2,113.5 feet (644.2 m) elevation and a minimum of 2,063.0 feet (628.8 m) for a total usable storage capacity of 9,765 acre-feet (12,045,000 m3).[3]
- ^ a b US Army Corps of Engineers (June 18, 1997). "Willow Creek Lake". Retrieved 2009-08-30.
- ^ Stephen H. Daniels (August 19, 2002). "Two Jobs Not for the Faint of Heart: "Changing site conditions" on South American dams take on a new meaning". Engineering News-Record. Retrieved 2009-08-30.
- ^ a b c Columbia Basin Water Management Division. "Willow Creek Dam and Lake". U.S. Army Corps of Engineers. Archived from the original on 1998-12-03. Retrieved 2009-08-30.