The Wetlands Data Layer maintained by the National Wetlands Inventory are classified as described in the Wetlands and Deepwater Habitats of the United States, also known as the Cowardin system. The Cowardin Classification System is used by the Federal government to identify and classify different types of wetlands. It uses a biological definition of wetlands, which focuses on habitat-related characteristics of a wetland, such as the vegetation community and the length of time water is present. These data provide a powerful resource to address questions and support decision-making in various fields of study including , habitat management for wildlife including many endangered and threatened species and supporting healthy watersheds for local communities.
Visit our interactive StoryMap to learn more about the Cowardin Classification System.