Lake Maharry Dam, located in Maloy, Iowa, is a privately owned earth dam designed by the USDA NRCS and completed in 1969 for water supply purposes. The dam stands at 21 feet high with a length of 490 feet, creating a reservoir with a storage capacity of 92 acre-feet and a surface area of 9.3 acres. The dam is regulated and permitted by the Iowa Department of Natural Resources, with regular inspections and enforcement ensuring its safety and compliance with state regulations.

Despite being classified as having a low hazard potential, Lake Maharry Dam is rated as having a moderate risk level. While the condition assessment is not rated, the dam is considered to be in good standing with no reported issues. With an uncontrolled spillway type and no outlet gates, the dam's risk management measures and emergency action plan status are currently unknown. The dam's association with the Natural Resources Conservation Service highlights the importance of sustainable water resource management and conservation efforts in the area, making it a significant site for water resource and climate enthusiasts to monitor and study.