Twin Lakes, located in Vilas County, Wisconsin, is a public utility hydroelectric facility with a primary purpose of flood risk reduction and hydroelectric power generation. The dam, completed in 1908, is a gravity structure measuring 10 feet in height and 157 feet in length, with a NID storage capacity of 93,526 acre-feet. The dam is equipped with a controlled spillway and a Tainter (radial) outlet gate to manage water flow and ensure safety.

Managed by the Federal Energy Regulatory Commission, Twin Lakes has a low hazard potential and a very high risk assessment rating due to its critical role in flood control and power generation. Although the condition assessment is not available, regular inspections are conducted every three years to ensure the dam's structural integrity and operational efficiency. The emergency action plan (EAP) for the dam was last revised in December 2018 to meet guidelines and enhance emergency preparedness.

With its picturesque location in Eagle River and important role in water resource management, Twin Lakes is a vital asset for the surrounding community and ecosystem. Climate and water resource enthusiasts can appreciate the engineering and environmental significance of this historic dam, which continues to play a crucial role in safeguarding the local area from flooding and providing clean energy through hydroelectric power generation.