Mapping the Nation's Wetlands

The NWI data layer is a result of working with many partners and cooperators that have contributed to mapping the nation’s wetlands for 50 years. Cooperators include states, other federal agencies, tribal, regional and local governments, as well as nonprofit organizations. To date, over 165 organizations have contributed to the Wetlands Data Layer.  NWI actively partners with entities interested in pursuing wetland and deepwater habitat mapping and analysis and can provide guidance and support throughout the life cycle of a wetland project(s).

Before submissions can be accepted into the national wetlands layer, data must comply with both the Federal Mapping and Classification Standards.  NWI provides wetland data contributors with guidance and documentation pertaining to all federal requirements for compliant data submissions.

 View a list of wetland data contributors and cooperators.

Analysis and Tools

The Wetlands Data Layer provides users with information to inform a variety of applications, including infrastructure development projects, recreation planning, habitat assessments, watershed resilience planning, species status assessments, wetland restoration, and more.

 The Service is committed to helping users get the most out of NWI data and has developed several resources aimed at supporting analysis, including a set of geospatial tools and online resources.