Gray Dam, located in Tama, Iowa, was completed in 1964 by the USDA NRCS and serves multiple purposes including fire protection, stock watering, and small fish pond management. This privately owned earth dam stands at 27 feet high and stretches 414 feet in length, with a storage capacity of 83 acre-feet. Situated on the TR-Iowa River, it is regulated by the Iowa Department of Natural Resources and is classified as having a low hazard potential.

Despite being uncontrolled, Gray Dam poses a moderate risk (level 3) due to its age and condition assessment being listed as "Not Rated." While it has not been inspected recently, the dam's emergency action plan status and risk management measures remain unknown. With a drainage area of 0.92 square miles and a surface area of 8 acres, Gray Dam is a vital water resource in the region, attracting water resource and climate enthusiasts interested in its historical significance and potential impact on the surrounding ecosystem.