Roseau River, located in Lake of the Woods, Minnesota, is a state-regulated dam with a primary purpose of recreation. Built in 1932, this earth dam stands at a height of 10 feet and spans 1700 feet in length. With a storage capacity of 250 acre-feet and a drainage area of 41.5 square miles, the dam serves as a vital resource for water management in the region.

Managed by the Minnesota Department of Natural Resources, the Roseau River dam has a low hazard potential and is in satisfactory condition as of the last assessment in 2009. Regular inspections are conducted every 8 years to ensure the safety and functionality of the structure. Although the dam does not have a spillway or locks, its presence contributes to the recreational opportunities and water supply for the surrounding community.

For water resource and climate enthusiasts, Roseau River represents a significant aspect of the local ecosystem, providing both recreational benefits and water management capabilities. With its historical significance and ongoing regulatory oversight, the dam serves as a reminder of the importance of sustainable water resource management in the face of changing environmental conditions.