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 U.S. Supreme Court adopted a Special Master's determination that Nebraska "knowingly failed" to comply with its obligations under a 2002 settlement agreement that resolved an…

The U.S. Supreme Court held that Oklahoma statutes that favor in-state water appropriation permit applicants over out-of-state permit applicants do not violate the Commerce Clause and are not…

A California court validated a settlement agreement and 11 related agreements concerning the conservation, transfer, and exchange of Colorado River water diverted for beneficial consumptive use…

The Ninth Circuit affirmed a lower court decision granting summary judgment in favor of the U.S. government on claims challenging the DOI's accounting of approximately 9,000 acre feet of…

The Tenth Circuit held that Oklahoma statutes that favor in-state water appropriation permit applicants over out-of-state permit applicants do not violate the Commerce Clause. The case arose after…

The Eleventh Circuit held that the U.S. Army Corps of Engineers may allocate storage water in Lake Lanier, a reservoir created in 1956 by the completion of Buford Dam on the Chattahoochee River,…

The Federal Circuit vacated and remanded a lower court decision dismissing breach of contract, takings, and Klamath River Basin Compact claims brought against the U.S. government by…