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                                                                                     Updated December  13, 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). WRDA  provisions
generally add to or amend existing USACE authorizations.
Drivers for WRDA  enactment often include congressional
and nonfederal interest in authorizing new USACE studies
and projects, adjusting existing USACE authorities, and
providing policy direction. Authorization is generally a
precondition for USACE activities' eligibility for federal
appropriations. For more information on USACE civil
works activities, particularly for water resource projects,
see CRS Report R47946, Processfor U.S. Army Corps of
Engineers (USACE)  Projects.

Consideration  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 of2022 (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 July 22, 2024, the House voted to
pass H.R. 8812 under suspension of the rules, and on
August 1, 2024, the Senate passed S. 4367 by unanimous
consent. On December 3, 2024, the leaders of the House
Transportation and Infrastructure Committee and the Senate
Environment and Public Works Committee announced
agreement on new legislative text for S.4376, the Thomas
R. Carper Water Resources Development Act of 2024.
S.4376, as passed by the House on December 9, 2024,
includes not only WRDA 2024 in Division A but also other
matters in Division B (e.g., adjustments to a Department of
Transportation credit assistance program, economic


development authorizations, and public building reforms).
WRDA   2024 would  authorize 17 new construction projects,
4 project modifications, and over 200 studies; would
encourage USACE   to support water supply, water
conservation, and drought resiliency at its projects; would
make adjustments to the process for identifying potential
unconstructed projects for deauthorization; and would call
for various reviews of USACE by the Government
Accountability Office (e.g., analyses of USACE emergency
response activities).

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,

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