Stratton Lock and Dam
| Stratton Lock and Dam | |
|---|---|
| Official name | William G. Stratton - Thomas A. Bolger Lock and Dam |
| Country | USA |
| Location | Nunda Township, McHenry County, Illinois |
| Coordinates | 42°18′36″N 88°15′6″W / 42.31000°N 88.25167°W |
| Purpose | Navigation |
| Status | Operational |
| Construction began | 1939 |
| Owner(s) | Illinois Department of Natural Resources |
| Dam and spillways | |
| Impounds | Fox River |
| Elevation at crest | 736.68 ft. NGVD |
| Width (crest) | 221 ft |
| Reservoir | |
| Creates | Chain O'Lakes |
| Surface area | 6,900 Acres |
| Website https://dnr.illinois.gov/waterresources/strattonlockanddam.html | |
The Stratton Lock and Dam (known until 1991 as the McHenry Dam, officially named the William G. Stratton - Thomas A. Bolger Lock and Dam) is a dam in Nunda Township, McHenry County, Illinois. It is named after former Governor William Stratton and Representative Thomas A. Bolger. The dam is the only dam on the Fox River (Illinois, USA) that is served by a lock system.