Barrett Lake, located in Barrett, Minnesota, is a gravity-type dam built in 1937 with a primary purpose of "Other." The dam stands at a height of 12 feet and has a hydraulic height of 4.6 feet, with a maximum storage capacity of 5,064 acre-feet. The dam is situated on the Pomme de Terre River and serves as a critical water resource for the region, with a drainage area of 332 square miles.

Managed by the Minnesota Department of Natural Resources, Barrett Lake is subject to state regulation, inspection, and enforcement to ensure its safety and functionality. The dam has a significant hazard potential but is currently assessed to be in satisfactory condition. With a surface area of 532 acres, the lake provides recreational opportunities and plays a crucial role in flood control and water supply management for Grant County. Its last inspection in October 2017 showed that it meets safety guidelines, and emergency action plans are in place to address any potential risks.

Barrett Lake remains a vital infrastructure piece in the water resource management system of Minnesota, with a long history of serving the community since its completion over eight decades ago. As climate change continues to impact water resources, the dam plays a crucial role in mitigating flood risks and ensuring a stable water supply for the region. The collaborative efforts of state agencies, local governments, and the community are essential in safeguarding Barrett Lake and its surrounding areas for future generations of water resource and climate enthusiasts.