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Updated July 23, 2024
Water Resources Development Acts: Primer and Action in the
118th Congress

The U.S. Army Corps of Engineers (USACE) is a
Department of Defense agency that, among other missions,
develops water resource projects, principally to improve
navigable channels, reduce flood and storm damage, and
restore aquatic ecosystems. Congress often considers, on a
biennial schedule, omnibus legislation to authorize USACE
water resource activities. Congress regularly refers to this
legislation as a Water Resources Development Act
(WRDA). WRDAs are distinguished from each other by the
year of enactment (e.g., WRDA 1986). Authorization is
generally a precondition for USACE activities to be eligible
for federal appropriations. For more information on
USACE civil works activities, particularly for water
resource projects, see CRS Report R47946, Process for
U.S. Army Corps of Engineers (USACE) Projects.
WRDA provisions generally add to or amend existing
USACE authorizations and provide congressional policy
direction to the agency. Drivers for enactment of a new
WRDA typically include nonfederal and congressional
interest in new USACE studies and projects as well as
adjustments to existing USACE projects, programmatic
authorities, and policies. Events such as droughts and
floods, along with congressional deliberations on
infrastructure investments and other policy initiatives, may
shape deliberations of USACE authorization legislation in
the 118th Congress.
Cons deratIon and Enactment of WRDAs
Congress typically consolidates USACE authorization
proposals into a WRDA bill rather than deliberating on
multiple bills of smaller scope. Historically, most WRDA
provisions have focused on USACE's water resource
activities; however, on some occasions, provisions have
addressed the agency's other responsibilities (such as its
regulatory responsibilities).
WRDAs have been enacted as stand-alone bills (e.g., in
2000, 2007, and 2014) and as part of broader bills (e.g., in
2016, 2018, 2020 and 2022). WRDA 2022 was enacted in
December 2022 as Title LXXXI of Division H of the James
M. Inhofe National Defense Authorization Act for Fiscal
Year 2023 (FY2023 NDAA; P.L. 117-263). For more on
WRDA 2022, see CRS Insight IN 11965, Water Resources
Development Act of 2022 (WRDA 2022).
In the 118th Congress, Members in the Senate and the
House introduced WRDA 2024 bills-S. 4367 and H.R.
8812, respectively. On May 22, 2024, the Senate
Committee on Environment and Public Works reported S.
4367 with an amendment in the nature of a substitute and
without a written report. On June 26, 2024, the House
Committee on Transportation and Infrastructure ordered to

report H.R. 8812, as amended by the committee. On July
22, 2024, the House of Representatives voted to pass the
bill under suspension of the rules. Congress may consider
which provisions to include in a negotiated WRDA 2024
bill and the process through which to enact such a bill.
USACE Activities and WRDA Authorizations
Although the three primary purposes of USACE studies and
projects historically have been improving navigation,
reducing flood risk, and restoring aquatic ecosystems, many
USACE projects are multipurpose-that is, they might
provide water supply storage, recreation, and hydropower,
among other benefits, in addition to one or more of the
three primary purposes. USACE is directly engaged in the
planning and construction of water resource projects.
In WRDAs, Congress generally establishes a general
framework and guidelines for implementing USACE water
resource projects and activities (e.g., setting standard
federal and nonfederal cost shares). WRDAs also authorize
USACE to perform specific studies and projects. Most
USACE water resource projects require two types of
congressional authorization, which are provided at different
points in time: (1) authority to study the feasibility of the
project and (2) authority to construct (and operate and
maintain, as applicable) the project. Authorizations for most
USACE studies and projects are geographically specific
(e.g., a flood risk reduction project for a specific
community along a river or coast).
WRDAs also may adjust the required cost sharing for
specific projects or activities, or they may authorize
USACE to provide specific financial assistance. For
example, in WRDAs since 1992, Congress has authorized
USACE to assist with environmental infrastructure (e.g.,
design and construction assistance for drinking water and
wastewater infrastructure) in designated communities,
counties, and states. For more on this assistance, see CRS
Report R47162, Overview of U.S. Army Corps of Engineers
Environmental Infrastructure (EI) Assistance.
Authorization for a project or activity on its own is not
sufficient for USACE to proceed; once Congress authorizes
an activity in a WRDA, USACE must still receive funding
for that activity (e.g., Investigation account funding to
complete an authorized study). Congress provides
appropriations for USACE through the annual Energy and
Water Development appropriations process and, at times,
through supplemental appropriations. Most USACE
appropriations are directed toward specific USACE studies
and projects authorized by Congress. For more on USACE
funding, see CRS Report R46320, U.S. Army Corps of
Engineers: Annual Appropriations Process, and CRS In

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