Douglas County State Lake Dam, located in Sibleyville, Kansas, is a vital structure managed by the state for fish and wildlife conservation and recreational activities. Built in 1961 by Wilson and Co, this earth dam stands at a height of 58.1 feet and spans a length of 2280 feet, holding a maximum storage capacity of 6150 acre-feet. The dam's primary purpose is to support a fish and wildlife pond, with a surface area of 180 acres and a drainage area of 3.84 square miles, fed by Coal Creek.

Managed by the Kansas Department of Agriculture, the Douglas County State Lake Dam undergoes regular inspections with a frequency of 3 years to ensure its structural integrity and safety. With a high hazard potential and a fair condition assessment, the dam poses a moderate risk (3) to the surrounding area. The spillway, which is uncontrolled, has a width of 100 feet, and the dam does not have any outlet gates. Despite its age, the dam continues to serve its purpose effectively, providing essential habitat for wildlife and a recreational space for the community.

Situated in the Tulsa District of Kansas, the Douglas County State Lake Dam is a key component of the local ecosystem and an important water resource for the region. With its significant storage capacity and strategic location along Coal Creek, the dam plays a crucial role in managing water levels and supporting biodiversity in the area. For water resource and climate enthusiasts, this dam represents a fascinating intersection of engineering, conservation, and recreation, highlighting the importance of sustainable water management practices in ensuring the resilience and health of our ecosystems.