CWA Section 404/401 - Wetland and Waterway Permitting

Overview

Section 404 of the Clean Water Act regulates the discharge of dredged or fill material into waters of the United States, including wetlands. If a development project, construction activity, or other work involves placing fill material into a wetland, stream, river, lake, or other jurisdictional water body, a Section 404 permit is required.

Section 404 permits are issued by the U.S. Army Corps of Engineers (USACE). Section 401 of the CWA requires that any applicant for a federal permit that may result in a discharge to waters of the United States must also obtain a state water quality certification from the relevant state agency. In Ohio, Section 401 certification is issued by Ohio EPA’s Division of Surface Water.

This is one of the most commonly encountered federal permitting requirements for development projects, pipeline construction, road building, and any activity that involves grading, filling, or disturbing wetlands or waterways.

What Is Regulated

Waters of the United States

Section 404 jurisdiction extends to “waters of the United States,” a term that has been the subject of decades of legal and regulatory dispute. The scope of jurisdiction has shifted significantly depending on the administration and court decisions.

As a practical matter, the following are generally considered jurisdictional:

Traditional navigable waters (rivers, lakes, tidal waters)
Tributaries to navigable waters
Wetlands adjacent to navigable waters and their tributaries
Interstate waters

The jurisdictional status of isolated wetlands, ephemeral streams, and other features depends on the current regulatory definition and relevant case law. When in doubt, request a jurisdictional determination from USACE.

What Constitutes Dredge or Fill

“Discharge of dredged or fill material” includes:

Placement of fill material (soil, rock, concrete, construction debris) in a water body or wetland
Grading or mechanized land clearing in a wetland
Sidecasting of dredged material during channel maintenance
Dam or levee construction
Road construction through wetlands

Normal farming, silviculture, and ranching activities have specific exemptions under CWA Section 404(f), though these exemptions are narrow and frequently misapplied.

Permit Types

Nationwide Permits (NWPs)

Nationwide permits are general permits that authorize specific categories of activities with minimal individual review, provided the activity meets the NWP conditions. USACE reissues NWPs periodically (most recently in 2021).

Common NWPs relevant to environmental and development work:

NWP 12 - Oil or natural gas pipeline activities
NWP 14 - Linear transportation projects (roads, bridges)
NWP 29 - Residential developments
NWP 38 - Cleanup of hazardous and toxic waste
NWP 39 - Commercial and institutional developments
NWP 40 - Agricultural activities
NWP 41 - Reshaping existing drainage ditches
NWP 43 - Stormwater management facilities
NWP 58 - Utility line activities for water and other substances

Each NWP has specific conditions and thresholds (typically limiting impacts to 0.5 acres or less of waters/wetlands). If the project exceeds NWP thresholds or does not meet the general or specific conditions, an individual permit is required.

Individual Permits (IPs)

Individual permits are required for projects with significant impacts that cannot be authorized under a NWP. The individual permit process involves:

Pre-application consultation with USACE
Submission of a detailed permit application
Public notice and comment period (typically 30 days)
Alternatives analysis demonstrating the project is the least environmentally damaging practicable alternative
Mitigation plan for unavoidable impacts
Section 401 state water quality certification
USACE decision (permit, permit with conditions, or denial)

Individual permits take significantly longer than NWP authorizations - typically 6-18 months, sometimes longer for controversial projects.

Alternatives Analysis

For individual permits, the applicant must demonstrate that the proposed project is the least environmentally damaging practicable alternative (LEDPA). This is often the most contentious part of the permitting process.

EPA’s Section 404(b)(1) Guidelines (40 CFR Part 230) establish a presumption that practicable alternatives exist that do not involve filling waters of the United States. The applicant must rebut this presumption by evaluating alternatives and demonstrating why they are not practicable.

Practicability considers cost, logistics, and existing technology in light of the overall project purpose. An alternative is not practicable if it would result in unreasonable costs or is not logistically feasible.

Mitigation

Section 404 follows a mitigation sequence: avoid, minimize, compensate.

Avoid impacts to waters and wetlands to the maximum extent practicable
Minimize unavoidable impacts through project design modifications
Compensate for remaining unavoidable impacts through mitigation

Compensatory mitigation can be provided through:

Mitigation banking - purchasing credits from an approved mitigation bank. This is the preferred method for most projects because banks are already established and functioning.
In-lieu fee programs - paying into a fund that sponsors wetland restoration or creation projects in the watershed.
Permittee-responsible mitigation - the applicant constructs and maintains a mitigation site. This is the least preferred option because of historically poor success rates.

Mitigation ratios (the amount of mitigation required per acre of impact) vary by project, impact type, and the quality of the impacted resource. Ratios typically range from 1.5:1 to 3:1 or higher.

Section 401 Water Quality Certification

Any applicant for a Section 404 permit must also obtain a Section 401 water quality certification from the state where the discharge will occur. The state certifies that the discharge will comply with state water quality standards.

In Ohio, Section 401 certification is issued by Ohio EPA’s Division of Surface Water. The certification process may impose additional conditions on the project beyond what USACE requires.

If the state denies 401 certification, the 404 permit cannot be issued. If the state fails to act within a reasonable period (one year under the 2023 federal rule), certification is waived.

Jurisdictional Determinations

Before starting the permitting process, it is often necessary to determine whether the features on a project site are jurisdictional waters of the United States. USACE provides two types of jurisdictional determinations:

Preliminary JD - a non-binding determination that identifies potential jurisdictional features. Useful for project planning but does not provide regulatory certainty.
Approved JD - a binding determination that definitively identifies which features are jurisdictional. Valid for five years. Provides regulatory certainty and can be appealed.

Wetland delineations are typically conducted by environmental consultants following the USACE 1987 Wetland Delineation Manual and the applicable regional supplement (Eastern Mountains and Piedmont for most of Ohio). The delineation identifies wetland boundaries based on three indicators: hydrophytic vegetation, hydric soils, and wetland hydrology.

Enforcement

Unauthorized filling of waters of the United States is a federal violation. Penalties include:

Administrative penalties up to $25,000 per day
Civil penalties up to $64,618 per day
Criminal penalties for knowing violations (fines and imprisonment)
Restoration orders requiring removal of unauthorized fill and restoration of the impacted area

USACE and EPA share enforcement authority. EPA can veto a USACE permit decision under CWA Section 404(c) if the discharge would have an unacceptable adverse effect on the environment, though this authority is rarely exercised.

Source

Clean Water Act Sections 401, 404 (33 U.S.C. 1341, 1344). 40 CFR Part 230 (Section 404(b)(1) Guidelines). 33 CFR Parts 320-332 (USACE permit regulations). USACE 1987 Wetland Delineation Manual.