Located in Hawleyville, Iowa, the Frey Dam is a privately owned structure that serves multiple purposes, including fire protection and creating a small fish pond. Built in 1990, this earth dam stands at 27 feet tall and stretches 400 feet in length, with a storage capacity of 40 acre-feet. Situated on the TR-East Nodaway River and regulated by the Iowa Department of Natural Resources, the dam has a low hazard potential and a moderate risk assessment rating of 3.

Despite being uncontrolled, the dam poses no immediate threat due to its low hazard potential. With a surface area of 3.4 acres and a drainage area of 0.1 square miles, the Frey Dam not only provides essential water resources for the surrounding area but also supports the local ecosystem by fostering a habitat for small fish. Climate and water resource enthusiasts will find the Frey Dam an intriguing structure that showcases the delicate balance between human needs and environmental stewardship in the heart of Iowa.