Environmental groups and the Nez Perce Tribe have filed a lawsuit to prevent dredging of the lower Snake River that enables Lewiston, Idaho, to be the most inland seaport on the West Coast.
The lawsuit, filed Monday in federal court in Seattle, challenges the U.S. Army Corps of Engineers' approval of a $6.7 million dredging project scheduled to begin next month.
The lawsuit was filed by Earthjustice on behalf of a coalition of environmental groups.