| Gillham Lake | |
|---|---|
  Gillham Lake | |
| Location | Howard / Polk counties, Arkansas, United States |
| Coordinates | 34°12′56″N 94°13′50″W / 34.21556°N 94.23056°W |
| Type | reservoir |
| Primary inflows | Cossatot River |
| Primary outflows | Cossatot River |
| Basin countries | United States |
| Max. depth | ca. 90 ft (27 m) |
| Surface elevation | 502 feet (153 m) |
| Islands | 4+ |
Gillham Lake is a small reservoir located along the Cossatot River, mostly in Howard County, but also extending westward into Polk County, Arkansas. The lake is 6 miles (9.7 km) from Gillham, Arkansas.