Dams, Impoundments & Barriers

Dam Removal and Modification: Michigan Trout Unlimited supports the removal or modification of dams on Michigan’s coldwater watersheds when such actions will enhance hydrologic processes, stabilize thermal regimes, and improve habitat conditions for coldwater fish species. Dams often disrupt the natural flow of water, sediments, and nutrients, leading to habitat fragmentation, altered water temperatures, and reduced biodiversity. By removing or modifying these barriers, Michigan Trout Unlimited aims to restore ecosystem connectivity, allowing fish populations to access critical spawning, nursery, and thermal refuge habitats essential for their life cycles.

However, in cases where dams serve as barriers to migratory salmonids or help prevent the spread of aquatic invasive species, Michigan Trout Unlimited takes a more nuanced approach. The organization recognizes that while restoring fish passage can provide ecological benefits, it may also introduce challenges, such as increasing the movement of non-native species that could negatively impact native fish populations. As a result, decisions regarding dam removal, modification, or the implementation of fish passage solutions are made on a case-by-case basis. Michigan Trout Unlimited carefully considers both scientific data and social factors, including the potential effects on fisheries management, water quality, and community interests, before determining whether to support or oppose such actions.

Ultimately, Michigan Trout Unlimited is committed to balancing the ecological benefits of dam removal with the need to protect Michigan’s coldwater fisheries from potential threats. By prioritizing scientifically informed and regionally appropriate approaches, the organization seeks to support the long-term health and sustainability of the state’s river ecosystems.

Pigeon River - Golden Lotus Dam

Hydropower Dam Relicensing: Michigan Trout Unlimited supports the ongoing efforts of the Michigan Hydro-Relicensing Coalition to gain recognition and accommodation of coldwater fisheries needs in the negotiation of licenses for dams in Michigan regulated by the Federal Energy Regulatory Commission, and monitoring the implementation of those licenses when granted. Attention will be paid to improving flow regimes, water quality, temperature regimes and fish passage at federally regulated and other dams.

Nuisance Species Barriers: Michigan Trout Unlimited supports the use of appropriate means to block aquatic nuisance species or other undesirable introduced species from impairing coldwater fisheries, their watersheds and the Great Lakes.