Milligan Dam, located in Talmage, Iowa, serves multiple purposes including fire protection, stocking fish, and recreational activities. Built in 1973 by the USDA NRCS, this private dam stands at a height of 25 feet and spans 435 feet in length. It is situated on the TR-South Fork Clanton Creek, with a drainage area of 0.22 square miles and a storage capacity of 91 acre-feet.

The dam's low hazard potential and moderate risk assessment make it a key asset for water resource management in the region. While its condition is currently not rated, the Iowa Department of Natural Resources regulates and inspects the structure to ensure its safety and functionality. The dam's uncontrolled spillway type and earth construction highlight its reliance on natural materials and hydraulic principles for water management.

As climate change continues to impact water resources, the significance of structures like Milligan Dam in regulating water flow and storage becomes increasingly vital. With its strategic location and multiple functions, the dam represents a valuable resource for both local communities and wildlife in the Union County area. Its role in maintaining water quality, supporting recreational activities, and mitigating potential flood risks underscores the importance of sustainable water management practices in the face of a changing climate.