The Washington Supreme Court upheld the Department of Ecology's rule that set a summertime minimum instream-flow rate for the Spokane River at 850 cubic feet per second (cfs). Environmental…

A district court denied summary judgment for New York in a challenge to EPA's designation of the eastern Long Island Sound as an open-water dredge disposal site. New York argued EPA's…

A district court dismissed a lawsuit challenging two protocol agreements entered into by Native American tribes and the Bureau of Indian Affairs that established procedures for enforcement of the…

A state appellate court held invalid the Department of Ecology's administrative rule establishing summer minimum instream flows for the lower reach of the Spokane River. Environmental groups…

A state court reversed the Montana Department of Natural Resources and Conservation's approval of a water use permit for a proposed silver-copper mine in Montana's Cabinet Mountains. An…

A state appellate court reversed a judgment against a coastal use permit issued by Louisiana's Department of Natural Resources for construction of an oil pipeline. The Department argued that…

The U.S. Supreme Court, in an ongoing dispute between Florida and Georgia over the apportionment of the Apalachicola-Chattahoochee-Flint River Basin's waters, remanded a Special Master's…

The U.S. Supreme Court held that the United States may pursue claims against New Mexico for violating the Rio Grande Compact, which Colorado, New Mexico, and Texas entered into in the 1930s to…

The U.S. Supreme Court, in an unsigned judgment and decree, ordered Wyoming to pay Montana $20,340 in damages, plus $67,270.87 in costs, for reducing the amount of water available in the Tongue…

The Ninth Circuit upheld a lower court's dismissal of a tribe's NEPA challenge to a DOI guidance that did not consider its interest when allocating the water rights of the Colorado River…