Wetland Assessments and Delineations

EMC Planning Group prepares two types of wetland analysis documents: Wetland Assessments and Wetland Delineations. Wetland assessments include a field investigation to identify potential wetland areas based on general observations of soil, hydrology and vegetation; however, no specific data collection is taken to conclusively determine the presence of wetlands potentially jurisdictional by the Army Corps of Engineers or to identify the precise amount of wetlands. Wetland assessments include a text description and map of potential wetland areas and are typically recommended for preliminary land use feasibility projects.

Wetland delineations include a field investigation to determine the extent of jurisdictional waters of the U.S. and wetlands that may be regulated by the U.S. Army Corps of Engineers. Preliminary wetland delineations are performed based on the methods outlined in the Corps of Engineers Wetlands Delineation Manual (Department of the Army Environmental Laboratory 1987), which includes the evaluation of hydrophytic vegetation, analysis of hydric soil characteristics, and evidence of wetland hydrology. Preliminary wetland delineations include a narrative text, field data sheets, soil survey maps, and a map depicting boundaries of jurisdictional wetland habitat, suitable for U.S. Army Corps of Engineers permit application.