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, agreed unanimously with a…

The U.S. Supreme Court denied certiorari in a lawsuit concerning President Barack Obama's 2016 proclamation of the Northeast Canyons and Seamounts National Marine Monument off the New England…

The D.C. Circuit affirmed dismissal of a lawsuit concerning reserved water rights in the Klamath River Basin. Ranchers sued to prevent Native American tribes from exercising reserved water rights…

The Ninth Circuit reversed a district court order staying state law claims in a lawsuit concerning the California Water Resources Board's amendments to its water quality control plan for the…

The Montana Supreme Court reversed, 5-2, a lower court decision reversing the Montana Department of Natural Resources and Conservation's (DNRC's) issuance of a beneficial water use…

The Ninth Circuit affirmed in part and vacated in part a district court's dismissal of a county's complaint in long-standing litigation over appropriation of water in the Walker River…

The U.S. Supreme Court denied, 8-0, Texas' motion to review a river master's final determination in a long-running dispute over how Texas and New Mexico share water. Texas challenged the…

The Tenth Circuit held, 2-1, that a sovereign must affirmatively act to extinguish aboriginal water rights in a lawsuit concerning water rights of the Pueblos of Jemez, Santa Ana, and Zia in the…

The Illinois Supreme Court dismissed a lawsuit concerning the city of Chicago's replacement of water meters and water main pipes as well as the partial replacement of lead service lines that…

The Nevada Supreme Court held that the public trust doctrine did not permit reallocation of water rights already adjudicated and settled under the doctrine of prior appropriation in a lawsuit…