Ames Basin #4 is a local government-owned earth dam located in Ames, Iowa, along the TR- SKUNK R. river. Completed in 1985, this dam stands at a height of 12 feet and spans 1,270 feet, with a storage capacity of 129 acre-feet. Its primary purpose is flood risk reduction, reflecting the critical role it plays in managing water resources in the area. The dam is regulated by the Iowa Department of Natural Resources and undergoes regular inspections to ensure its satisfactory condition.

Despite its high hazard potential, the condition assessment of Ames Basin #4 remains satisfactory as of June 2020. The dam has a moderate risk classification, indicating the need for ongoing risk management measures to mitigate potential hazards. With an uncontrolled spillway and a history of periodic inspections, Ames Basin #4 serves as a crucial infrastructure for flood protection in Story County, Iowa. Its strategic location and design highlight the importance of water resource management and climate resilience efforts in the region, underscoring the significance of infrastructure like Ames Basin #4 for safeguarding communities against natural disasters.