Dawson Dam, located in Des Moines, Iowa, along the Mississippi River, was completed in 1972 by the USDA NRCS. This earth dam, standing at a height of 40 feet and a length of 272 feet, serves primarily for fire protection and as a stock or small fish pond. The dam has a storage capacity of 56 acre-feet, with a normal storage level of 39 acre-feet, covering a surface area of 3 acres and draining a 0.06 square-mile area.

Managed by a private entity, Dawson Dam is regulated and permitted by the Iowa Department of Natural Resources. Despite its low hazard potential, the dam's risk assessment is moderate, emphasizing the importance of regular inspections and maintenance. While its condition is currently not rated, the dam remains operational for its intended purposes and contributes to the local ecosystem and water resource management in the area.

For water resource and climate enthusiasts, Dawson Dam offers a glimpse into the intersection of human structures and natural environments. Its presence along the TR-DRY BRANCH stream showcases how infrastructure like dams can support various functions, from fire protection to aquatic habitat enhancement. With its controlled spillway and earth construction, Dawson Dam stands as a testament to the importance of responsible water management practices, ensuring both safety and sustainability for the surrounding community and ecosystem.