Eidsvold 31 & 32 N is a rockfill dam located in Lyon, Minnesota, along the Yellow Medicine River-TR, with the primary purpose of flood risk reduction. Owned and regulated by the local government, this dam stands at a height of 20 feet and has a storage capacity of 141 acre-feet. Despite its low hazard potential, the dam has not been rated for its condition assessment as of yet.

The dam, designed by ROADWAY RETENTION, is inspected every 8 years to ensure its structural integrity and functionality. With state permitting, inspection, and enforcement in place, Eidsvold 31 & 32 N is equipped to handle potential flood events and protect the surrounding area. Although it has not been modified in recent years, the dam continues to serve its purpose effectively in mitigating flood risks along the Yellow Medicine River-TR.

With Collin Peterson (D) as the representative for the area, Eidsvold 31 & 32 N plays a crucial role in the water resource management of Lyon, Minnesota. As climate change continues to impact weather patterns and increase the frequency of extreme events, structures like this rockfill dam are essential for safeguarding communities and infrastructure from flood-related risks.