Field Guides & Tools

The following is a partial list of relevant tools for delineating and classifying wetlands. CDOT does not endorse any private companies.

Regional Wetland Delineation Supplements & Automated Data Sheets

National Wetland Plant List

The U.S. Army Corps of Engineers (Corps), as part of an interagency effort with the U.S. Environmental Protection Agency (EPA), the U.S. Fish and Wildlife Service (FWS) and the U.S. Department of Agriculture Natural Resources Conservation Service (NRCS), developed the National Wetland Plant List (NWPL) that is updated often. The NWPL is used to determine whether the hydrophytic vegetation parameter is met when conducting wetland determinations under the Clean Water Act and the Wetland Conservation Provisions of the Food Security Act. The list must be used in any wetland delineation performed.

Other Helpful Tools:


Wetland Plant Guides

Wetland Soil Guides