Section 404—

Provision of the CWA that governs the discharge of dredge-and-fill material into waters of the United States, including many wetlands.

Section 404 permit of the CWA—

Permit issued by the Corps, or a state with an EPA-approved program, that authorizes the discharge of dredged or fill material into waters of the United States, including many wetlands.

Section 404(b)(1) of the CWA—

Provision of the CWA that authorizes the EPA to promulgate guidelines for the Corps to apply when making Section 404 permit decisions.


Permit review process for mitigation that involves the consideration of mitigation in three steps: (1) seeking avoidance of the impact, (2) minimizing any unavoidable impacts, and (3) compensating for any remaining impacts.

Soil macrofauna—

Animals living in salt marsh sediments on which wading birds feed by probing into the bottom of shallow water habitat.


Standard Operating Procedures.


Concept in which populations forming a metapopulation contribute disproportionately to the numbers of individuals comprising various populations.

Southern California Wetland Recovery Project (SCWRP)—

A partnership of public agencies that work to acquire, restore, and enhance coastal wetland and watersheds between Point Conception and the U.S.-Mexico border.


Provision of the FSA under which landowners who planted an agricultural commodity crop in wetlands that had not been cropped prior to December 23, 1985, may lose USDA benefits.


U.S. Army Corps of Engineers.


U.S. Department of Agriculture.


U.S. Fish and Wildlife Service.


U.S. Geological Survey.


Land area that drains into a stream, river, or other body of water.


An ecosystem that depends on constant or recurrent shallow inundation or saturation at or near the surface of the substrate.

Wetland creation—

The conversion of a persistent upland or open water area into a wetland by human activity at a site where a wetland did not previously exist.

Wetland enhancement—

An increase in one or more functions of an existing wetland by human modification.

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