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 more than 45 years. Cooperators include states, other federal agencies, tribal governments, regional and local governments, and 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, habitat assessments, climate change climate change
Climate change includes both global warming driven by human-induced emissions of greenhouse gases and the resulting large-scale shifts in weather patterns. Though there have been previous periods of climatic change, since the mid-20th century humans have had an unprecedented impact on Earth's…

Learn more about climate change
resilience planning, species status assessments, wetland restoration, invasive species invasive species
An invasive species is any plant or animal that has spread or been introduced into a new area where they are, or could, cause harm to the environment, economy, or human, animal, or plant health. Their unwelcome presence can destroy ecosystems and cost millions of dollars.

Learn more about invasive species
assessments 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.