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GRAND RAPIDS

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March 23, 2025


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Grand Rapids, located in Itasca County, Minnesota, is a significant hydroelectric facility situated on the Mississippi River. Constructed in 1916, this gravity and rockfill dam stands at 21 feet in height and spans 235 feet in length, with a storage capacity of 4000 acre-feet. The dam serves multiple purposes, including hydroelectric power generation and recreation, offering a surface area of 465 acres for outdoor activities.

Managed by the Minnesota Department of Natural Resources and regulated by the Federal Energy Regulatory Commission, Grand Rapids Dam plays a crucial role in water resource management and energy production in the region. With a maximum discharge capacity of 8000 cubic feet per second and a controlled spillway width of 79 feet, the dam poses a significant hazard potential, requiring regular inspections and risk assessment. Despite its age, the dam's condition assessment is currently not available, highlighting the need for ongoing maintenance and emergency preparedness.

For water resource and climate enthusiasts, Grand Rapids represents a historic landmark in the sustainable utilization of hydropower resources. As the dam continues to provide clean energy and recreational opportunities, it serves as a reminder of the importance of maintaining and monitoring critical infrastructure to ensure the safety and well-being of surrounding communities. The risk management measures and emergency action plans associated with Grand Rapids Dam underscore the proactive approach taken to address potential hazards and ensure the resilience of water infrastructure in the face of changing environmental conditions.

Year_Completed 1916
Dam_Height 21
River_Or_Stream Mississippi River
Dam_Length 235
Surface_Area 465
Drainage_Area 3370
Nid_Storage 4000
Outlet_Gates Other Controlled - 6, Tainter (radial) - 1
Hazard_Potential Significant
Nid_Height 21
       

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