Generally include swamps, marshes, bogs, and similar areas. As defined in 40 CFR 230.3 and the HRS, wetlands are those areas that are inundated or saturated by surface or ground water at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions. Such areas can be natural or constructed. Only areas that meet this definition are eligible to be evaluated as wetlands for HRS purposes. Wetlands identified using other definitions (e.g., the Food Security Act of 1985, the wetlands classification system of the U.S. Fish and Wildlife Service, the 1989 Federal Manual for Identifying and Delineating Jurisdictional Wetlands) are not eligible unless they also meet the 40 CFR 230.3 definition (see HRSGD Section 11.1). Additionally, for HRS purposes, isolated wetlands and wetlands contiguous to rivers, lakes, and coastal tidal waters are defined as surface water bodies.
Any number of tidal and nontidal areas characterized by saturated or nearly saturated soils most of the year that form an interface between terrestrial (land-based) and aquatic environments; include freshwater marshes around ponds and channels (rivers and streams), brackish and salt marshes; other common names include swamps and bogs.