Located in Booneville, Iowa, the Jonbar Ranch Dam is a privately owned structure designed by the USDA NRCS. Completed in 1966, this earth dam serves multiple purposes including fire protection and creating a small fish pond. With a height of 33 feet and a length of 472 feet, the dam has a storage capacity of 104 acre-feet and covers a surface area of 7 acres.

The dam is regulated by the Iowa Department of Natural Resources and has a low hazard potential, with a moderate risk assessment rating. While it has not been inspected since 1967, the dam is maintained in a condition that is not rated. Despite its age, the Jonbar Ranch Dam continues to serve its intended purposes effectively and is situated on the TR-Raccoon River, providing essential water resources for the surrounding area.

Climate and water resource enthusiasts will appreciate the unique design and historical significance of the Jonbar Ranch Dam. As a key structure in the region, it plays a crucial role in managing water resources, providing fire protection, and supporting local wildlife habitats. With its peaceful surroundings and sustainable functionality, the dam stands as a testament to effective water management practices in Iowa.