Stratton Lock and Dam - Credit: Wikimedia Commons
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. Read more on Wikipedia
Source: en.wikipedia.org