US Army Corps of Engineers
Pittsburgh District Website

Jurisdictional Determinations

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Information for our Customers:

     The Department of the Army, acting through the U.S. Army Corps of Engineers (Corps), has authority to permit work and the placement of structures in navigable waters of the U.S. under Sections 9 and 10 of the Rivers and Harbors Act of 1899 (RHA), and to permit the discharge of dredged or fill material in waters of the U.S. under Section 404 of the Clean Water Act (CWA).
     The identification and location of jurisdictional Waters of the United States including wetlands regulated by the Corps under Section 404 of the CWA and Sections 9 and 10 of the RHA is determined through a process known as a Jurisdictional Determination (JD). The Corps uses a multi-parameter approach defined in Technical Report Y-87-1, Corps of Engineers Wetlands Delineation Manual, dated January 1987, and supplemental guidance when making wetland determinations. It generally requires positive evidence of hydrophytic vegetation, hydric soils, and wetlands hydrology for some portion of the growing season for a determination that an area is a federally-regulated wetland.
     The initial step in the permit application process is to identify and delineate those bodies of water and wetlands that are subject to CWA and RHA jurisdiction. The JD process provides important information to a landowner or investor for planning purposes or carrying out certain activities on a given parcel of land. Accurately identifying jurisdictional waters is essential in making an application for a permit from the Corps to determine if work would occur in regulated waters of the United States.
     An approved JD is an official Corps determination that jurisdictional waters of the United States are either present or absent on a particular site. An approved JD is valid for five years and can be appealed through the Corps' administrative appeal process set out at 33 CFR Part 331.
     In order to help further streamline the JD procedures, we encourage applicants to consider the use of consultants (LINK TO WETLAND CONSULTANT LIST) to help perform the delineation, document the basis and rationale for asserting or declining to assert jurisdiction under the CWA, and provide an electronic copy as well as a paper copy of the completed JD form (and supporting documentation) with the permit application or JD request.