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Updated May 27, 2022
Prior Converted Cropland Under the Clean Water Act

For decades, the value of wetlands and efforts to protect
them have been recognized in different ways through
national policies, federal laws, and regulations. The central
federal regulatory program, authorized in Clean Water Act
(CWA) Section 404 in 1972, requires permits for
discharges of dredged or fill material (e.g., sand, soil,
excavated material) into wetlands that are considered
waters of the United States (WOTUS). Also, the Food
Security Act (FSA) of 1985-enacted on December 23,
1985-included a wetland conservation provision
(Swampbuster) that indirectly protects wetlands by making
producers who farm or convert wetlands to agricultural
production ineligible for selected federal farm program
benefits. Both FSA and CWA Section 404 regulations
include exceptions to their requirements for prior converted
cropland (PCC). While both include exceptions for PCC,
determinations are made under separate authorities and for
different programmatic purposes. This has created
confusion for some affected landowners, who argue for
greater consistency among PCC determinations. It has also
generated some congressional interest in aligning the
requirements for PCC.
What Is PCC!
The CWA Section 404 program and Swampbuster
provision require the administering agencies to make
certain determinations about wetland areas, including
whether an area qualifies as PCC. While historically the
agencies defined PCC similarly, the way the agencies have
determined what qualifies as PCC has diverged over time.
Clean Water Act
Under the CWA, discharges of pollutants into WOTUS are
unlawful unless authorized by a permit. Section 404 permits
authorize discharges of dredged or fill material into
WOTUS, including wetlands (33 U.S.C. §1344). The Army
Corps of Engineers (Corps) and U.S. Environmental
Protection Agency (EPA) are responsible for implementing
various aspects of the Section 404 permitting program.
Most routine, ongoing farming activities do not require
CWA Section 404 permits. CWA Section 404(f) exempts
normal farming, silviculture, and ranching from permitting
requirements. However, if a farming activity is associated
with bringing a WOTUS into a new use where the flow,
circulation, or reach of that water might be affected (e.g.,
bringing a wetland into agricultural production or
converting an agricultural wetland into a nonwetland area),
that activity would require a permit.
The CWA does not define or mention PCC explicitly.
However, CWA regulations exclude PCC from the
definition of WOTUS and therefore the act's permitting
requirements. In 1990, the Corps issued Regulatory
Guidance Letter 90-07, which created one of the first direct
links to Swampbuster. It clarified that PCC, as defined by

U.S. Department of Agriculture's (USDA's) Natural
Resources Conservation Service (NRCS) in its 1988
National FSA Manual, are not subject to regulation under
CWA Section 404. The manual defines PCC as wetlands
that were both manipulated (drained or otherwise
physically altered to remove excess water from the land)
and cropped before 23 December 1985, to the extent that
they no longer exhibit important wetland values.
In 1993, the Corps and EPA codified into regulation the
existing policy that PCC are not WOTUS (58 Federal
Register 45008). In the rule's preamble, the agencies
referenced the definition of PCC from the National FSA
Manual. They also indicated that any PCC that were
abandoned, per the NRCS provisions on abandonment, and
reverted back to wetlands could be recaptured and subject
to CWA regulation. Specifically, per the preamble, PCC
that now meets wetland criteria is considered to be
abandoned unless: For once in every five years the area has
been used for the production of an agricultural commodity,
or the area has been used and will continue to be used for
the production of an agricultural commodity in a commonly
used rotation with aquaculture, grasses, legumes, or pasture
production. Although the definition and abandonment
criteria were included in the rule's preamble, they were not
included in Corps and EPA regulations.
In 2015, the Corps and EPA promulgated the Clean Water
Rule (80 Federal Register 37054) during the Obama
Administration, which established a revised definition for
WOTUS. It maintained the PCC exclusion as it existed in
the 1993 rule and similarly did not define the term or
include abandonment criteria in the rule itself.
In 2020, during the Trump Administration, the Corps and
EPA published the Navigable Waters Protection Rule
(NWPR) to revise the definition of WOTUS (85 Federal
Register 22250). The rule maintained the PCC exclusion,
defined PCC, and clarified abandonment criteria. The
NWPR defined PCC as any area that, prior to December
23, 1985, was drained or otherwise manipulated for the
purpose, or having the effect, of making production of an
agricultural product possible. PCC would lose its status for
CWA purposes when it is not used for, or in support of,
agricultural purposes at least once in the immediately
preceding five years and the land reverts to wetland status.
The NWPR text did not define agricultural purposes for
determining abandonment, but the rule's preamble stated
that agricultural purposes include land use that makes
production of an agricultural product possible, including but
not limited to grazing and haying. The preamble also said
that cropland left idle or fallow for conservation or
agricultural purposes for any period of time remains in
agricultural use and maintains PCC status. The term
agricultural purposes appeared to broaden the exception for
CWA purposes. In contrast, under the abandonment criteria

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