Glen Loch is a gravity dam located in Chippewa Falls, Wisconsin, specifically on Duncan Creek. Completed in 1875, this dam serves primarily as a water supply source, with a storage capacity of 1000 acre-feet and a normal storage level of 700 acre-feet. Covering a surface area of 45 acres and draining an area of 110 square miles, Glen Loch stands at a height of 37 feet, with a hydraulic height of 21 feet.

Despite its age, Glen Loch has undergone modifications in 1959 and 1984 to ensure its structural integrity and functionality. The dam has a high hazard potential but is currently assessed as being in satisfactory condition, with the last inspection conducted in October 2020. The dam is regulated by the Wisconsin Department of Natural Resources (WIDNR) and is subject to state permitting, inspection, and enforcement, ensuring its compliance with safety standards and regulations.

With its historical significance and essential role in water supply for the region, Glen Loch remains a key infrastructure for Chippewa Falls. Water resource and climate enthusiasts are likely to appreciate the blend of engineering prowess and environmental stewardship demonstrated by this gravity dam, which continues to contribute to the community's water needs while upholding safety standards and risk management measures.