Thomson is a hydroelectric dam located on the St. Louis River in Carlton, Minnesota. Built in 1907, it stands at a height of 15 feet and has a length of 1600 feet. The dam has a storage capacity of 4352 acre-feet and covers a surface area of 375 acres, with a drainage area of 3548 square miles. With a maximum discharge of 91700 cubic feet per second, Thomson plays a crucial role in both hydroelectric power generation and recreation.

Owned by the Federal Energy Regulatory Commission (FERC), Thomson is regulated by both state and federal agencies, including the Minnesota Department of Natural Resources. The dam is inspected regularly to ensure its safety, with a high hazard potential due to its location and structure. Emergency action plans are in place, with an updated contact list and risk assessment indicating a high level of risk management measures. Thomson's primary purpose is hydroelectric power generation, with associated structures and outlet gates for efficient operation.

Thomson offers a glimpse into the intersection of water resource management and climate considerations. As a key player in renewable energy production and water storage, this dam showcases the importance of balancing ecological impact with energy generation. With its historical significance and ongoing regulatory oversight, Thomson serves as a model for sustainable hydroelectric infrastructure in the face of changing climate patterns and increasing water demands.