The Seventh Circuit affirmed summary judgment for the Army Corps of Engineers in a challenge to its decision to continue an over century-old project that involves building river training structures to maintain the navigable channel in the Middle Mississippi River. Environmental groups argued that th...

A district court denied summary judgment for environmental groups in their challenge to the Army Corps of Engineers' approval of a navigation improvement project in San Juan Harbor in Puerto Rico. The groups sued the Corps, NMFS, and FWS, arguing they violated the ESA, NEPA, and the CWA. With respec...

A district court granted EPA's and the Army Corps of Engineers' motion to stay Texas' and Idaho's challenge to the Biden Administration's 2023 rule revising the definition of "waters of the United States" under the CWA. The court stayed the suit until publication in the Federal Register of the agenc...

The Tenth Circuit affirmed denial of conservation groups' claims in a lawsuit concerning the Bureau of Reclamation's decision to sign a water contract allowing the state of Utah to draw from reservoir releases rather than the Green River and its tributaries. The groups argued the Bureau violated NEP...

The Eighth Circuit affirmed summary judgment for the Bureau of Reclamation in a challenge to the Bureau's decision to move forward with a water reclamation project in North Dakota. The state of Missouri argued the Bureau violated the Water Supply Act by moving forward without first getting approval ...

A district court adopted a magistrate judge's findings and recommendations to grant in part and deny in part cross-motions for summary judgment in a lawsuit concerning the Forest Service's approval of a vegetation management project in the Kootenai National Forest. An environmental group had argued,...

The U.S. Supreme Court held, 5-4, that an 1868 peace treaty between the Navajo Nation and the United States establishing the Navajo Reservation reserved necessary water to accomplish the purpose of the reservation, but did not require the U.S. government to take affirmative steps to secure water for...

A district court vacated BLM's final EIS and 2019 record of decision (ROD) that approved an open-pit phosphate mine in southeast Idaho. Environmental groups had argued the ROD and final EIS upon which it was based violated NEPA, FLPMA, and the CWA. The court granted summary judgment in part for the ...

The Ninth Circuit, 2-1, denied a municipal irrigation district's request to compel a district court to remand to state court its motion for preliminary injunction in a suit concerning water allocation in the Klamath Basin. The district initially sought to stop the Bureau of Reclamation from releasin...

A district court granted in part and denied in part an environmental group's motion for summary judgment in a CWA citizen suit concerning the Forest Service's discharge of aerially deployed fire retardant into navigable waters of the United States without an NPDES permit. The group argued the Servic...