Nodaway Lake Dam, located in Mt. Etna, Iowa, is a vital water resource structure owned by the local government and regulated by the Iowa Department of Natural Resources. Completed in 1936, this earth-type dam stands at a height of 35 feet and has a length of 650 feet, providing a storage capacity of 550 acre-feet for water supply purposes. The dam overlooks the TR-Middle Nodaway River and serves the surrounding area with a normal storage capacity of 290 acre-feet.

Despite being classified as having a significant hazard potential and a fair condition assessment, Nodaway Lake Dam undergoes regular inspections every five years to ensure its safety and functionality. The dam features an uncontrolled spillway with a width of 25 feet and is situated in a moderate-risk zone. The dam's location, design, and purpose make it a crucial component of the local water management infrastructure, contributing to the sustainability and resilience of the region in the face of changing climate patterns. Enthusiasts of water resources and climate adaptation will find Nodaway Lake Dam to be a key asset in maintaining water supply and mitigating risks in the area.