Thompson Dam, located in Lee County, Iowa, was completed in 1979 by the USDA NRCS and serves multiple purposes including fire protection, stock, and small fish pond management. The earth dam stands at 38 feet high and spans 250 feet, creating a storage capacity of 64 acre-feet and covering a surface area of 4.3 acres. The dam is regulated by the Iowa Department of Natural Resources and is designated as low hazard potential with a moderate risk assessment.

The dam, situated on TR-LICK CR, is owned and operated by a private entity and falls under state jurisdiction for permitting, inspection, and enforcement. The structure is not associated with any other dams and has no outlet gates or locks. With a spillway type of Uncontrolled, the dam's main purpose is to provide essential water resources for fire protection and livestock maintenance in the area. Despite its age, Thompson Dam has not been rated for its condition, and its Emergency Action Plan status remains unknown.

For water resource and climate enthusiasts, Thompson Dam presents an intriguing case study of a privately owned dam in Iowa, showcasing its role in providing crucial services for both agricultural and environmental purposes. The dam's unique design and low hazard potential offer an opportunity to explore the challenges and opportunities associated with managing and maintaining such infrastructure in a changing climate. With its moderate risk assessment, Thompson Dam exemplifies the need for ongoing monitoring and risk management measures to ensure the safety and functionality of water resources in the region.