The personal watercraft industry reacted more cautiously, saying it would work to maintain watercraft use at the parks exempt from the ban. We look forward to working with the Park Service. Environmental group lists most endangered rivers The environmental organization American Rivers released its annual list of the nation's most endangered rivers in April. None were in the Bay watershed. Snake River in Washington state.
Dams threaten salmon.
Missouri River in Montana, North Dakota, South Dakota, Nebraska, Iowa, Kansas and Missouri. Dams and channels hurt river. Ventura River in California. Dams hurt river. Copper River in Alaska.