Lower 7 Group No. 1 is a privately-owned dam located in Zumbrota, Minnesota, along the TR-NO. BRANCH ZUMBRO RIVER. Built in 1971 by the USDA NRCS, this earth dam stands at a height of 27 feet and serves the primary purpose of flood risk reduction. With a storage capacity of 65 acre-feet and a maximum discharge of 700 cubic feet per second, this structure plays a crucial role in managing water levels in the area.

Despite being uncontrolled, the dam has a low hazard potential and is currently in a not rated condition assessment status. The risk assessment for Lower 7 Group No. 1 is moderate, indicating a level 3 risk rating. While the dam has not been modified in recent years and lacks an Emergency Action Plan (EAP) preparedness, it remains a key asset for flood control in the region. With its stone core and soil foundations, this dam exemplifies the importance of infrastructure in mitigating the impacts of climate change on water resources.