Pat Mayse Dam, also known as Pat Mayse Lake, is a Federal-owned structure located in Lamar County, Texas. Completed in 1967, this earth-type dam stands at a height of 96 feet and has a volume of 5,580,000 cubic yards. Its primary purpose is flood risk reduction, with additional functions for recreation and water supply. The dam's spillway type is uncontrolled, with a spillway width of 100 feet and a hazard potential classified as high.

The dam's risk assessment, conducted by the US Army Corps of Engineers, identified potential issues such as erosion from water flow over the spillway and embankment erosion due to water seepage. In the event of a breach, downstream areas, particularly Arthur City, TX, could face flooding and economic impacts. To mitigate these risks, the USACE implements various measures, including emergency exercises with local responders, regular updates to the Emergency Action Plan, and continuous monitoring and maintenance of the dam's integrity.

Overall, Pat Mayse Dam is a crucial infrastructure for flood control in the region, with risk management measures in place to ensure its safety and functionality. Climate and water resource enthusiasts can appreciate the complex engineering and proactive strategies employed to protect downstream communities and maintain the dam's integrity in the face of potential hazards.