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Snowmobiles in Yellowstone National Park

Case Number # 1861

For eight years, the Bush administration has worked to reverse the National Park Service's 2001 decision to eliminate recreational snowmobiling -- and its adverse air, noise, and wildlife impacts -- from Yellowstone, the nation's first national park.  In 2003, Earthjustice attorneys succeeded in overturning in court the Bush administration's first Yellowstone snowmobile plan, under which 950 snowmobiles would have been allowed into the park each winter day.  In 2007, the Bush administration finalized a second plan authorizing 540 snowmobiles in Yellowstone each winter day -- twice the number of recent winter seasons, during which the Park Service's own noise and air quality thresholds were violated by snowmobiles. The Bush administration's plan to double the number of snowmobiles within Yellowstone contradicted the recommendation of Park Service's own biologists, who had concluded that lower vehicle numbers were necessary to protect the park's winter-stressed wildlife.

On September 15, 2008, a federal court in Washington, D.C., rejected the Bush administration's 540-snowmobile plan in a second Earthjustice lawsuit, reaffirming that "the fundamental purpose of the national park system is to conserve park resources and values." In the words of the court, the administration's decision to allow a doubling of snowmobile use within Yellowstone "clearly elevate[d] use over conservation of park resources and values" contrary to Park Service mandates. The court set aside the Bush administration's plan and directed the Park Service to develop a new regulation protective of Yellowstone National Park.

The Bush administration refused. Citing a November 2008 Wyoming court decision that left the Park Service with the authority to develop a new winter use plan, in December 2008 the Bush administration published a regulation that will allow 720 snowmobiles into the park each winter day -- 180 more than the plan invalidated only three months before by the Washington, D.C., court. Earthjustice has filed a lawsuit on behalf of five conservation groups challenging the Bush administration's eleventh-hour effort to perpetuate recreational snowmobiling within Yellowstone National Park. 

Press Releases

Thursday, October 15, 2009
Reduction in snowmobile numbers moves park in right direction
Tuesday, December 9, 2008
New rule allows more than twice as many snowmobiles as scientists recommend
Wednesday, March 28, 2007
Administration proposal would nearly triple snowmobile numbers in the park
Tuesday, June 1, 2004
EPA ordered to review and clarify regulations
Wednesday, December 24, 2003
Phaseout of snowmobiles to continue
Thursday, January 11, 2001
Conservation groups announced that they will defend the recent snowmobile phaseout in Yellowstone National Park against a lawsuit brought by snowmobile manufacturers.