Houghton Dam, located in Westerville, Iowa, is a privately-owned earth dam built in 1967 for fire protection, stock watering, and small fish pond purposes. The dam stands at a height of 25 feet and spans a length of 280 feet, with a storage capacity of 31 acre-feet. Situated on the TR-Twelve Mile Creek, the dam is regulated by the Iowa Department of Natural Resources and undergoes regular inspections, with a low hazard potential and a moderate risk assessment rating.

Managed by the USDA NRCS, Houghton Dam serves as a crucial water resource for the local community, providing irrigation water and supporting wildlife habitat. Despite its age, the dam's condition is currently not rated, though it meets regulatory guidelines and has not undergone any significant modifications since its construction. With a surface area of 2.2 acres and a drainage area of 0.2 square miles, the dam plays a vital role in flood control and water storage in the region.

With its uncontrolled spillway and minimal discharge capacity, Houghton Dam remains a stable structure that contributes to the overall water management efforts in Union County, Iowa. As climate change continues to impact water resources, the significance of dams like Houghton in ensuring water security and environmental sustainability cannot be overstated.