| Dillon Reservoir | |
|---|---|
 Dillon Reservoir in October (Tenmile Peak in the distance) | |
  Dillon Reservoir  Dillon Reservoir | |
| Location | Summit County, Colorado, United States |
| Coordinates | 39°36′27″N 106°03′18″W / 39.6074°N 106.0551°W |
| Type | Reservoir |
| Primary inflows | Blue River, Snake River |
| Primary outflows | Blue River |
| Basin countries | United States |
| Surface area | 3,233 acres (1,308 ha) |
| Water volume | 250,000 acre⋅ft (310,000,000 m3) |
| Shore length1 | 26.8 mi (43.1 km) |
| Surface elevation | 9,017 ft (2,748 m) |
| 1 Shore length is not a well-defined measure. | |
Dillon Reservoir, sometimes referred to as Lake Dillon, is a large fresh water reservoir located in Summit County, Colorado, United States, south of I-70 and bordered by the towns of Frisco, Silverthorne, and Dillon. It is a reservoir for the city of Denver, and its waters are under the control of Denver Water. Popular ski areas are close to the reservoir, including Copper Mountain, Keystone, Arapahoe Basin, and Breckenridge.