The Fourth Circuit vacated the West Virginia Department of Environmental Protection's CWA §401 certification for a proposed pipeline that would transport natural gas from West Virginia to…

A district court denied for lack of jurisdiction the Commonwealth of Kentucky's and business groups' motions to preliminarily enjoin EPA's and the Army Corps of Engineers' 2023…

The Fourth Circuit denied a petition to review the Virginia Department of Environmental Quality's (DEQ's) and the State Water Control Board's approval of a state water permit for a…

A district court granted Texas' and Idaho's motion to preliminarily enjoin EPA's and the Army Corps of Engineers' 2023 rule revising the definition of "waters of the…

A district court granted in part an environmental group's motion for summary judgment in a challenge to NMFS' 2021 permit authorizing the incidental taking of ESA-listed humpback whales…

The Ninth Circuit reversed a district court's order granting voluntary remand and vacating EPA's 2020 CWA Section 401 Certification Rule. States, environmental groups, and tribes…

A district court adopted a magistrate judge's recommendation to deny summary judgment for an environmental group in a lawsuit concerning the Army Corps of Engineers' issuance of a CWA §…

The Fifth Circuit denied a petition to review a CWA permit issued by the Army Corps of Engineers authorizing development of a natural gas pipeline and export facility in south Texas. A group of…

The D.C. Circuit vacated a license issued by FERC for operation of a hydroelectric dam on the Susquehanna River in Maryland. The state of Maryland issued a CWA §401(a)(1) certification to the dam…

A district court denied a state prison's motion for partial summary judgment in a CWA citizen suit brought by a California county. The prison argued the county did not have statutory standing…