Lost Creek Lake

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Lost Creek Lake
USACE Lost Creek Lake and Dam.jpg
The lake behind William L. Jess Dam
Location Jackson County, Oregon
Coordinates 42°40′59″N 122°39′17″W / 42.68306°N 122.65472°W / 42.68306; -122.65472Coordinates: 42°40′59″N 122°39′17″W / 42.68306°N 122.65472°W / 42.68306; -122.65472
Type reservoir
Primary inflows Rogue River
Primary outflows Rogue River
Catchment area 674 sq mi (1,750 km2)
Basin countries United States
Max. length 10 mi (16 km)
Surface area 3,430 acres (13.9 km2) (full pool)
Water volume 315,000 acre·ft (389×10^6 m3)
Shore length1 30 mi (48 km)
Surface elevation 1,751 to 1,872 ft (534 to 571 m)[1]
1 Shore length is not a well-defined measure.

Lost Creek Lake is a reservoir located on the Rogue River in Jackson County, Oregon, USA. The lake is impounded by William L. Jess Dam which was constructed by the U.S. Army Corps of Engineers in 1977 for flood control. The lake and dam were the first completed elements of the multi-purpose Rogue River Basin Project, consisting of Lost Creek Lake, Applegate Lake and the Elk Creek project. The lake is located approximately 27 miles (43 km) (straight line) northeast of Medford, Oregon.[1]


Construction of Lost Creek Dam began in 1972 and was completed in 1977. In 1996, the Congress renamed Lost Creek Dam, along with the adjoining intake structure, in honor of William L. Jess, one of the founders of the Rogue Basin Association, which was established in 1955. Jess was a strong advocate for the construction and multiple use of the impounded waters.

William L. Jess Dam, impounding Lost Creek Lake

The primary purpose of the dam is flood control and is operated in conjunction with Applegate Dam to regulate water flows down the river as well as to impound water for summer use. The dam is an earthfill structure with a gated spillway and contains two hydroelectric generating units with a total capacity of 49 megawatts. The hydroelectric plant has a rated flow capacity of 2,600 cubic feet per second (74 m3/s).[1] The technologically advanced and unusual intake tower regulates water temperature by combining lake water from different depths in a mixing chamber before releasing it downstream. This serves to cool the normally warm summer water of the Rogue River, which improves conditions for fish migration and survival. The dam is 3,750 feet (1,140 m) long, 327 feet (100 m) high, with the top of the dam at an elevation of 1,882 feet (574 m) above mean sea level (MSL).

The river below the dam is a popular area for easy rafting and tubing in the summer when the water is relatively warm. Joseph H. Stewart State Recreation Area is located along the southern shore of the lake. Casey State Park is located on the Rogue River below the dam.

Fish hatchery[edit]

The Cole M. Rivers Fish Hatchery, one of the largest in Oregon, is just downstream of the dam. Built by the Corps of Engineers and operated by the Oregon Department of Fish and Wildlife, the hatchery can produce 425,000 pounds (193 t) of trout and salmon annually.

See also[edit]


  1. ^ a b c "Lost Creek Dam and Lake". Columbia Basin Water Management Division. 2009-05-31. Retrieved 2009-05-10. 

External links[edit]