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…

A district court dismissed an environmental group's APA lawsuit against EPA challenging 40 C.F.R. §124.55(b), which pertains to state certification of discharge permits issued by the Agency…

The Eleventh Circuit upheld the dismissal of a Native American tribe's lawsuit challenging the government's management of the Central and Southern Florida Project for Flood Control in…

The Fourth Circuit upheld the U.S. Army Corps of Engineers' decision to issue a CWA §404 fill permit to a surface mine in West Virginia. Environmental groups challenged the permit on two…

A district court dismissed as time barred environmental groups' CWA and APA claims challenging EPA's list of dispersants and other projects that may be used in the event of an oil spill…

The D.C. Circuit reversed a lower court decision that EPA exceeded its authority under CWA §404(c) when it invalidated an existing U.S. Army Corps of Engineer permit authorizing a mining company…

The D.C. Circuit upheld a consent decree that established a schedule for EPA to initiate notice-and-comment rulemaking and make a formal decision whether to promulgate a new rule revising certain…

A district court denied EPA's motion to dismiss a poultry farmer's lawsuit against the Agency seeking a declaratory judgment that farmyard stormwater runoff is statutorily exempt from…

The Sixth Circuit struck down the U.S. Army Corps of Engineers' reissuance of nationwide permit 21, which authorizes surface coal mining operations to discharge dredged and fill material into…