Richards Dam, located in Diagonal, Iowa, is a private earth dam completed in 1999 by the NRCS with a primary purpose of providing fire protection and serving as a stock or small fish pond. The dam has a height of 37 feet and a length of 642 feet, with a storage capacity of 110 acre-feet and a surface area of 8.5 acres. It is regulated by the Iowa Department of Natural Resources and is subject to state permitting, inspection, and enforcement.

Situated on TR- Squaw Creek in Ringgold County, Richards Dam poses a low hazard potential with a moderate risk assessment rating. Although the dam is not currently rated for its condition, it is regularly inspected by state authorities to ensure its safety and functionality. Despite its uncontrolled spillway type, the dam is designed to manage potential risks and emergencies effectively, with emergency action plans in place to guide response protocols.

Water resource and climate enthusiasts will appreciate Richards Dam for its contribution to local water management and environmental conservation efforts. With its strategic location and purposeful design, the dam serves as a valuable asset for fire protection, livestock watering, and wildlife habitat enhancement. As a privately owned structure, Richards Dam represents a collaborative approach to sustainable water infrastructure development in Iowa, demonstrating the importance of effective regulation and monitoring to ensure the safety and resilience of critical water resources in the region.