Thompson Dam, located in Crescent, Iowa, along the TR- PIGEON CREEK, was completed in 1955 and serves multiple purposes including fire protection, stock, and small fish pond. The dam is privately owned and regulated by the Iowa Department of Natural Resources, with a low hazard potential and a moderate risk assessment. With a height of 40 feet and a length of 240 feet, the earth dam has a storage capacity of 59 acre-feet and a surface area of 4.5 acres.

Designed by the USDA NRCS, Thompson Dam is constructed with soil foundations and features an uncontrolled spillway. The dam has not been rated for its condition assessment, but inspections, permitting, and enforcement by the state regulatory agency are in place. Despite its limited discharge capacity, the dam's location in Pottawattamie County makes it a crucial water resource for the surrounding area, providing essential water supply for fire protection and agricultural purposes.

Thompson Dam's presence along the TR- PIGEON CREEK highlights its significance in managing water resources in Iowa. With its historical construction and ongoing regulatory oversight, the dam continues to play a vital role in maintaining water levels for various uses in the region. For water resource and climate enthusiasts, Thompson Dam stands as a testament to the importance of sustainable water management practices and the value of maintaining infrastructure for the benefit of both human and ecological needs.