North Fork Feather River in California. Hydropower dams harm fish, wildlife and recreation. Clear Creek in Texas. Flood control proposal would destroy Houston Bayou. Green River in Colorado and Utah.
Dams threaten fish.
Presumpscot River in Maine. Dams threaten fish. Clark Fork in Montana. Proposed mine threatens fish and wildlife. Mussels hurt Hudson ecosystem Experts have discovered a serious threat posed by zebra mussels, a foreign species that migrated to the northeastern United States in the late 1980s and sharply reduced food supplies for freshwater clams.