Williams Dam, located in Villisca, Iowa, is a privately owned structure built in 2006 by the NRCS with a primary purpose of fire protection, stock, or small fish pond. The dam, standing at 35 feet high and 673 feet long, serves as a low hazard potential structure on the TR-West Nodaway River. With a storage capacity of 266 acre-feet and a normal storage of 80 acre-feet, the dam covers a surface area of 15 acres and drains an area of 0.85 square miles.

Managed by the Iowa DNR, Williams Dam is state regulated, inspected, and enforced for safety and compliance. Despite being classified as not rated in its condition assessment, the dam poses a moderate risk level. With an uncontrolled spillway type and a spillway width of 2 feet, the structure is designed to handle maximum discharge events. While the dam has not been modified in recent years and lacks certain emergency preparedness measures, it remains an important feature for water resource management and climate resilience in the region.

Overall, Williams Dam stands as a vital component of the water infrastructure in Montgomery County, Iowa, contributing to fire protection, agricultural needs, and environmental conservation. As a privately owned earth dam, it provides essential services while being subject to state regulations and periodic inspections. With a focus on risk management and safety measures, the dam plays a crucial role in ensuring water security and resource sustainability in the area, particularly for the residents and wildlife dependent on the TR-West Nodaway River.