Sonstegard-Telste is a crucial flood risk reduction structure located in Lyon County, Minnesota, along the Yellow Medicine River. Built in 1983 by the USDA NRCS, this earth dam stands at a height of 42 feet with a structural height of 46 feet and a length of 1400 feet. It has a storage capacity of 890 acre-feet and serves the primary purpose of flood risk reduction, providing protection to the surrounding area from potential inundation.

Managed by the MNDNR EWR, Sonstegard-Telste is regulated and inspected by state authorities to ensure its satisfactory condition and significant hazard potential are monitored. Despite its moderate risk assessment, the dam has shown to meet guidelines and operational requirements, with a last inspection date of May 2019. With its uncontrolled spillway and outlet gates, Sonstegard-Telste plays a vital role in protecting the local community and enhancing water resource management in the region.

Water resource and climate enthusiasts will appreciate the significance of Sonstegard-Telste in mitigating flood risks along the Yellow Medicine River. As a key infrastructure project designed by the USDA NRCS and regulated by the MNDNR EWR, this earth dam stands as a testament to effective water management strategies in Minnesota. Its storage capacity, structural integrity, and regular inspections highlight its importance in safeguarding the surrounding area from potential disasters, making it a critical asset in the region's water resource and climate resilience efforts.