Simon Dam, located in Riverside, Iowa, is a privately owned earth dam completed in 2006 for fire protection, stock, or small fish pond purposes. The dam stands at a height of 31 feet and has a length of 537 feet, with a storage capacity of 65 acre-feet. Situated on the TR-English River, the dam is regulated by the Iowa Department of Natural Resources and is inspected, permitted, and enforced by state authorities. With a low hazard potential and a moderate risk assessment rating, Simon Dam plays a crucial role in water resource management in Washington County.

Managed by the Rock Island District of the US Army Corps of Engineers, Simon Dam serves as a vital infrastructure for water control and conservation in the region. Despite not being federally owned or funded, the dam plays a significant role in mitigating flood risks and ensuring water availability for various uses. The dam's uncontrolled spillway, soil foundation, and strategic location make it a key player in the local ecosystem and a valuable asset for climate resilience efforts in the area.

With a surface area of 5.3 acres and a drainage area of 0.17 square miles, Simon Dam is a notable structure that contributes to water storage and management in the region. While its condition assessment is currently not rated, the dam's operational effectiveness and low hazard potential highlight its importance for water resource enthusiasts and climate advocates alike. As a privately owned facility with state regulatory oversight, Simon Dam exemplifies the collaborative efforts needed to address water challenges and adapt to changing climate conditions in Iowa.