| Lake McConaughy | |
|---|---|
 Outlet tower at Lake McConaughy | |
  Lake McConaughy  Lake McConaughy | |
| Location | Keith County, Nebraska, United States |
| Coordinates | 41°13′30″N 101°43′00″W / 41.22500°N 101.71667°W |
| Type | reservoir |
| Basin countries | United States |
| Max. length | 22 mi (35 km) |
| Max. width | 4 mi (6.4 km) |
| Surface area | 35,700 acres (144 km2) |
| Max. depth | 142 ft (43 m) |
| Surface elevation | 3,274 ft (998 m)[1] |
Lake McConaughy (known locally and affectionately as Lake Mac) is a reservoir on the North Platte River. It is located 9 miles (14 km) north of Ogallala, Nebraska, United States, near U.S. Highway 26 and Nebraska Highway 61. The reservoir was named for Charles W. McConaughy, a grain merchant and mayor of Holdrege, Nebraska, one of the leading promoters of the project. Although he did not live to see the completion of the project, his leadership and perseverance eventually culminated in a public power and irrigation project that helped Nebraska become one of the nation's leading agricultural states.