How did the construction of the Marmot dam affected wildlife?

The construction of the Marmot Dam in Oregon significantly impacted local wildlife by altering river ecosystems and disrupting natural habitats. The dam restricted fish migration, particularly affecting salmon and other aquatic species that rely on free-flowing rivers for spawning. Additionally, changes in water temperature and sediment flow downstream further impacted the biodiversity in the area. The removal of the dam in 2007 aimed to restore these ecosystems, allowing wildlife populations to recover and thrive.