Threlkeld Dam, located in the Skunk River floodplain in Washington, Iowa, is a private-owned structure designed by USDA NRCS. Completed in 2010, this earth-type dam stands at a height of 32 feet and spans 200 feet in length. With a storage capacity of 44 acre-feet and a surface area of 3.1 acres, the primary purpose of Threlkeld Dam is for fire protection, stock, or small fish pond use.

Managed by the Iowa Department of Natural Resources, Threlkeld Dam is regulated, permitted, inspected, and enforced by state agencies. Despite its low hazard potential and current "Not Rated" condition assessment, no emergency action plan (EAP) or risk assessment has been prepared for the dam. The structure boasts a spillway width of 10 feet and a maximum discharge capacity of 25 cubic feet per second, serving as a crucial water resource for the area.

While Threlkeld Dam serves its primary purposes effectively, there is a need for further evaluation and preparation in terms of emergency response planning and risk assessment. As an integral component of the Skunk River watershed, this dam plays a vital role in water management and conservation efforts in the region. Climate and water resource enthusiasts are encouraged to monitor developments regarding Threlkeld Dam's safety and regulatory compliance to ensure its continued functionality and environmental impact.