Cheesman Canyon will reopen Thursday, Sept. 13, following the completion of Denver Waterís valve system testing, which began Monday. The utility closed the canyon, which includes the upper and lower Gil Trail, as a safety precaution due to high flows in the river during the testing.
The new valves were installed as part of a project to upgrade the dam, which was built in 1905. This two-and-a-half year, $18.3 million project began in 2010, and included a specialized diving operation to install underwater valves.
The damís valve system controls the amount of water flowing from the reservoir into the South Platte River.