Located in Lucas County, Iowa, the Lucas County Roadgrade Dam (L-1) is a privately owned structure designed by the Lucas County Engineer. This earth dam, standing at a height of 49 feet and spanning a length of 1240 feet, was completed in 1989 and serves a primary purpose other than flood control or water supply. With a storage capacity of 860 acre-feet and a surface area of 16 acres, this dam plays a crucial role in managing the flow of the TR-Chariton River in the region.

Regulated by the Iowa Department of Natural Resources, the Lucas County Roadgrade Dam (L-1) is classified as having a low hazard potential and a moderate risk assessment. Despite not being rated for condition assessment, the dam is regularly inspected, permitted, and enforced by state agencies to ensure its structural integrity and safety. Although currently not equipped with an emergency action plan or inundation maps, the dam's risk management measures are in place to address potential threats and emergencies effectively.

Water resource and climate enthusiasts can appreciate the strategic location and purpose of the Lucas County Roadgrade Dam (L-1) in Lucas County, Iowa. With its role in managing the flow of the TR-Chariton River and its moderate risk assessment, this privately owned earth dam stands as a vital infrastructure supporting the surrounding community and ecosystem. As efforts continue to regulate, inspect, and enforce safety measures for the dam, its role in water resource management and climate resilience remains crucial for sustainable development in the region.