Climate-Proofing Our Infrastructure: Building Climate Resilience with the Army Corps of Engineers
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Closing out our Earth Week series this year, we provide an update on recent Clean Water Act regulatory developments and discuss their impact on renewable energy development....more
As referenced in last month’s publication, the U.S. Environmental Protection Agency (EPA) and the U.S. Department of the Army (Army) will be hosting numerous separate listening sessions with key stakeholders starting next...more
After more than 50 years, EPA and the Army Corps of Engineers (“the Agencies”) continue to struggle to find a durable definition of “waters of the United States” (“WOTUS”) in the Clean Water Act, leaving the regulated...more
On March 12, 2025, the Environmental Protection Agency (“EPA”) and the Army Corps of Engineers (the “Corps”) issued a Memorandum outlining new guidance on implementing the “continuous surface connection” standard in...more
UPDATE: On May 17, 2023, the U.S. Environmental Protection Agency and the U.S. Army Corps of Engineers appealed the district court ruling in Texas v. EPA to the U.S. Court of Appeals for the Fifth Circuit. This appeal would...more
Section 404 of the Clean Water Act of 1972, 33 U.S.C. Section 1251 et seq., prohibits the discharge of dredged or fill material into “navigable waters” without a permit. Section 502(7) of that act defines “navigable waters”...more
On December 7, the Environmental Protection Agency (EPA) and U.S. Army Corps of Engineers (the Corps) took their latest stab at clarifying the jurisdiction of the Clean Water Act (CWA), proposing (another) new definition of...more
On November 18, 2021, The Environmental Protection Agency (EPA) and Army Corps of Engineers (Corps) announced the availability of a pre-publication version of a proposed rule (Proposed Rule) to amend the definition of Waters...more
As a result of the U.S. District Court for the District of Arizona’s August 30, 2021 order vacating and remanding the Navigable Waters Protection Rule (“NWPR”), discussed in our prior post, the Environmental Protection Agency...more
On September 3, 2021, the Environmental Protection Agency (EPA) and U.S. Army Corps of Engineers (Corps) announced the agencies’ will abandon the definition of Waters of the United States (WOTUS) set forth in the April 21,...more
On August 30, 2021, Judge Marquez of the U.S. District Court for the District of Arizona vacated the U.S. Environmental Protection Agency (“EPA”) and U.S. Army Corps of Engineers’ (“Corps”) (collectively “Government...more
In light of the Biden Administration's plans to reverse significant portions of the Navigable Waters Protection Rule, the Environmental Protection Agency and U.S. Army Corps of Engineers have announced a schedule of public...more
The U.S. Environmental Protection Agency (EPA) and U.S. Army Corps of Engineers (Corps) announced on Aug. 4, 2021, the start of a long anticipated rulemaking process to revise the regulatory definition of "waters of the U.S."...more
At the end of July, the Environmental Protection Agency (EPA) announced that the Biden administration will begin working to create a “durable definition” of Waters of the United States (WOTUS). EPA and U.S. Army Corps of...more
In a move that is expected to expand the reach of the Clean Water Act, the US Environmental Protection Agency and the Army Corps of Engineers announced their intent to revise the definition of “waters of the United States”—a...more
In the ongoing saga of the Clean Water Act’s so-called “Waters of the United States” or WOTUS rule, the U.S. Environmental Protection Agency (EPA) and the Army Corps of Engineers (ACOE) announced changes to the definition of...more
On April 21, 2020, the U.S. Environmental Protection Agency (US EPA) and the Army Corps of Engineers (Army Corps) published in the Federal Register their revised rule defining which waterbodies are subject to federal...more
On January 23, 2020, the United States Environmental Protection Agency (“EPA”) and the U.S. Army Corps of Engineers issued the Navigable Waters Protection Rule (the “2020 Rule”), which includes a revised definition of the...more
The United States Environmental Protection Agency (EPA) and the United States Army Corps of Engineers (USACE) recently announced publication of its final Navigable Waters Protection Rule to define "Waters of the United...more
On January 23, 2020, the Environmental Protection Agency and the United States Army Corps of Engineers (the “Agencies”) issued the “Navigable Waters Protection Rule” as the latest attempt to define the phrase “waters of the...more
On January 23, 2020, the U.S. Environmental Protection Agency and the Department of the Army announced the finalized Navigable Waters Protection Rule, defining “Waters of the United States” under the Clean Water Act....more
EPA and Army Corps of Engineers Give New Waters of the U.S. Definition - The Environmental Protection Agency and Army Corps of Engineers today issued a final rule with a new definition of “Waters of the United States” that...more
WOTUS Definition Court Challenges Continue - The Environmental Protection Agency and the Army Corps of Engineers published a final rule in the Federal Register that repeals their 2015 Clean Water Rule defining the scope of...more
Seyfarth Synopsis: The Army Corps of Engineers (Corps) and the U.S. Environmental Protection Agency (EPA) published its final rule this week to repeal the 2015 rule that “impermissibly expanded the definition of ‘waters of...more