Cottage Grove Lake is a reservoir on the Coast Fork Willamette River in Lane County, Oregon, United States.[1] The lake is about 3 miles (4.8 km) long.[2]
| Cottage Grove Lake | |
|---|---|
 Cottage Grove Dam and Lake | |
  Cottage Grove Lake Location of Cottage Grove Lake in Oregon  Cottage Grove Lake Cottage Grove Lake (the United States) | |
| Location | Lane County, Oregon, United States |
| Coordinates | 43°42′55″N 123°03′02″W / 43.71528°N 123.05056°W |
| Type | Mesotrophic reservoir |
| Primary inflows | Coast Fork Willamette River |
| Primary outflows | Coast Fork Willamette River |
| Catchment area | 106 square miles (270 km2) |
| Basin countries | United States |
| Managing agency | U.S. Army Corps of Engineers |
| Max. length | 3 miles (4.8 km) |
| Surface area | 1,025.9 acres (415.2 ha) |
| Average depth | 29 feet (8.8 m) |
| Max. depth | 73 feet (22 m) |
| Water volume | 33,000 acre-feet (41,000,000 m3) |
| Residence time | 2 months |
| Shore length1 | 10.6 miles (17.1 km) |
| Surface elevation | 794 feet (242 m) |
| 1 Shore length is not a well-defined measure. | |
Cottage Grove Dam, which impounds the lake, is 1,750 feet (530 m) long and 95 feet (29 m) high.[2] It was completed in 1942 as one of the 13 dams built by the United States Army Corps of Engineers in the Willamette River basin.[1] It is about 5 miles (8 km) south of Cottage Grove at river mile 29 (kilometer 47).[2]
The dam's main function, in conjunction with the Dorena Dam on the Row River, a Coast Willamette tributary, is flood control.[1] Other functions are to supply water for irrigation and improved river navigation.[2] The lake and its surrounds are used for recreation, including boating, camping, fishing, picnicking, and bird-watching.[2]
See also
editReferences
edit- ^ a b c "Cottage Grove Lake (Lane)". Atlas of Oregon Lakes. Portland State University. 1985–2019. Retrieved March 29, 2019.
- ^ a b c d e "Cottage Grove Dam and Reservoir". U.S. Army Corps of Engineers. Retrieved March 28, 2019.