Lake Eucha
| Eucha Dam | |
|---|---|
| Country | United States | 
| Location | Delaware County, Oklahoma | 
| Coordinates | 36°20′32″N 94°51′29″W / 36.34218°N 94.85808°W | 
| Opening date | 1952 | 
| Dam and spillways | |
| Impounds | Spavinaw Creek | 
| Length | 2,100 ft (640 m) | 
| Elevation at crest | 778 ft (237 m) | 
| Reservoir | |
| Creates | Lake Eucha | 
| Total capacity | 80,800 acre⋅ft (99,700,000 m3) nominal | 
| Surface area | 2,800 acres (1,100 ha) | 
| Maximum length | 8.5 mi (13.7 km) | 
| Maximum width | 0.7 mi (1.1 km) | 
| Normal elevation | 778 feet (237 m) | 
In 1952, Lake Eucha in Delaware County, Oklahoma, was created by completion of the Eucha dam on Spavinaw Creek. The nearest town is Jay, Oklahoma. This lake is owned by the City of Tulsa, Oklahoma and functions as additional storage and as a buffer for Lake Spavinaw, which is the principal municipal water source for Tulsa.