Warren Lake, located in Cottonwood County, Minnesota, is a state-regulated reservoir managed by the Minnesota Department of Natural Resources. Built in 1939, this gravity dam stands at a height of 13 feet and spans 44 feet in length, with a storage capacity of 1064 acre-feet and a normal storage level of 665 acre-feet. The reservoir covers a surface area of 140 acres and serves as a crucial water resource for the local community, with a maximum discharge capacity of 535 cubic feet per second.

Despite its age, Warren Lake's dam is assessed to be in fair condition with a low hazard potential, making it a relatively safe and stable structure. The reservoir is primarily used for purposes other than flood control or hydroelectric power generation, and its controlled spillway ensures proper water management during periods of high flow. The risk assessment for Warren Lake indicates a very high risk level, underscoring the importance of ongoing monitoring and maintenance to ensure the safety and integrity of the dam for water resource and climate enthusiasts in the area.

Warren Lake's association with the Division Creek and its strategic location in Windom, Minnesota, make it a valuable asset for both water supply and ecological preservation. With its historical significance and continued importance in water management, Warren Lake stands as a testament to the state's commitment to sustainable water resource practices. As climate change impacts become more pronounced, the reservoir's role in water storage and regulation will only become more critical, highlighting the need for proactive measures to safeguard this vital resource for future generations.