Timberman Dam is a privately owned structure located in Pottawattamie, Iowa, along the TR-FARM CREEK. Built in 1963 by the USDA NRCS, this earth dam stands at a height of 30 feet and has a length of 530 feet, providing fire protection and serving as a small fish pond. With a storage capacity of 107 acre-feet and a surface area of 5.6 acres, Timberman Dam is regulated by the Iowa DNR and undergoes regular inspections, permitting, and enforcement to ensure its safety and compliance.

Despite its low hazard potential and moderate risk assessment rating, Timberman Dam has not been formally rated for its condition. The dam features an uncontrolled spillway and is designed to withstand the hydraulic pressures of its location. The dam's primary purpose, in addition to fire protection, is to serve as a stock or small fish pond, making it a valuable resource for the local community. With its strategic location in Henderson, Iowa, Timberman Dam provides essential water management services while contributing to the ecological diversity of the area.

As a key component of water resource management in the region, Timberman Dam represents a collaborative effort between federal agencies, such as the Natural Resources Conservation Service, and state regulatory bodies like the Iowa DNR. Its construction and operation adhere to state permitting and inspection requirements, ensuring the dam's functionality and safety. With its historical significance and ongoing contributions to the local ecosystem, Timberman Dam stands as a testament to sustainable water resource management practices in Iowa.