Located in Union County, Iowa, the Three Mile Creek Watershed Site U-5-A is a crucial water resource managed by local government authorities. The dam, constructed in 1980 by the USDA NRCS, serves multiple purposes including fire protection, stock, small fish pond management, and flood risk reduction. With a height of 24 feet and a storage capacity of 78 acre-feet, this Earth-type dam plays a vital role in regulating and conserving water in the area.

Managed by the Iowa DNR, this dam on Three Mile Creek is state-regulated and designed to withstand low hazard potential. Despite its moderate risk assessment, the dam is currently rated as "not rated" in terms of condition assessment. While there are no associated structures or outlets gates, the dam's uncontrolled spillway and soil foundation contribute to its functionality in managing water levels. With a drainage area of 0.28 square miles, this dam plays a crucial role in mitigating flood risks and ensuring water security in the region.

As part of the Rock Island District, the Three Mile Creek Watershed Site U-5-A is a key site for water resource and climate enthusiasts. With its strategic location in Talmage, Iowa, this dam symbolizes the importance of sustainable water management practices. As the primary source of water for fire protection and agricultural activities, this dam serves as a vital lifeline for the local community and underscores the significance of responsible water resource management in the face of climate change challenges.