Berryman is a private dam located in Mt. Sterling, Iowa, along the TR-Fox River. Designed by the USDA NRCS, this earth dam stands at 30 feet high and spans 500 feet in length. Its primary purpose is flood risk reduction, with additional benefits such as fish and wildlife pond creation, grade stabilization, and recreation opportunities. With a storage capacity of 106 acre-feet and a surface area of 7 acres, Berryman plays a crucial role in managing water resources in the area.

The dam is regulated by the Iowa DNR and is subject to state permitting, inspection, and enforcement. Despite its low hazard potential and moderate risk assessment, Berryman's condition has not been rated. The spillway type is uncontrolled, with a width of 14 feet, and the outlet gates are also uncontrolled. While the dam has not been modified in recent years, it serves as a vital infrastructure for water management and flood control in the region.

Located in Davis County, Iowa, Berryman contributes to the overall water resource management efforts in the area. With its strategic location and design, this dam not only helps reduce flood risks but also enhances the local ecosystem and recreational opportunities. As climate change continues to impact water resources, structures like Berryman play a crucial role in ensuring the sustainable management of water and protecting communities from potential hazards.