Big Stone Lake in Minnesota is a state-regulated water resource located along the Minnesota River, with a dam completed in 1937 by the Works Progress Administration (WPA-CW). The dam stands at a height of 15 feet and has a maximum storage capacity of 205,000 acre-feet, serving as a vital source for water management in the region. With a surface area of 12,094 acres and a drainage area of 1,182 square miles, the lake plays a crucial role in maintaining water levels and regulating flow downstream.

The Big Stone Lake dam, with a spillway width of 77 feet, has a significant hazard potential and is classified in fair condition as of the last assessment in 2008. Inspections are conducted regularly, with the last inspection in August 2019, highlighting the commitment to ensuring the safety and integrity of the structure. The lake's primary purpose is listed as "Other," indicating its multifaceted role in water resource management, with a normal storage capacity of 100,880 acre-feet and a maximum discharge rate of 5,600 cubic feet per second.

Located in Ortonville, Big Stone Lake is a key water resource managed by the Minnesota Department of Natural Resources (MNDNR EWR) to meet various regulatory standards. The dam's construction and operation are overseen by state agencies, reflecting a comprehensive approach to water resource management and climate resilience in the region. Enthusiasts of water resources and climate trends will find Big Stone Lake an intriguing case study in sustainable water management practices and the complexities of balancing environmental protection and human needs in a changing climate.