Monches, located in Waukesha, Wisconsin, is a gravity dam on the Oconomowoc River that was completed in 1844 primarily for recreational purposes. With a height of 14 feet and a length of 320 feet, the dam has a storage capacity of 50 acre-feet and serves as a vital resource for the surrounding community. Despite being classified with a low hazard potential and fair condition assessment, it is closely monitored and inspected every 10 years to ensure public safety.

The dam's controlled spillway, with a width of 16 feet, can handle a maximum discharge of 823 cubic feet per second. The risk assessment for the dam is rated as very high (1), indicating the importance of proper risk management measures. While it currently meets guidelines, there is a need for ongoing maintenance and emergency preparedness to mitigate any potential risks associated with the dam. Overall, Monches dam serves as a key recreational asset in the area, but careful management and oversight are necessary to ensure its continued safe operation for water resource and climate enthusiasts in the region.