Rush Dam, located in Martensdale, Iowa, is a private earth dam completed in 1972 with a primary purpose of fire protection, stock, or small fish pond. The dam has a height of 42 feet and a length of 420 feet, with a storage capacity of 86 acre-feet. It sits on the TR-Clanton Creek and is regulated by the Iowa Department of Natural Resources.

The dam's hazard potential is rated as low, with a moderate risk assessment score of 3. While the condition assessment is not rated, the dam is regularly inspected by the state and meets all regulatory requirements. The dam's purpose also includes recreation, with a surface area of 5.9 acres and a drainage area of 0.09 square miles.

Rush Dam is an essential water resource for the area, providing not only fire protection and stock water but also opportunities for recreational activities. With its moderate risk assessment and low hazard potential, the dam is well-maintained and regulated to ensure the safety of its surrounding community. Climate and water resource enthusiasts would find Rush Dam as an intriguing example of effective dam management in Iowa.