NWI Use Highlights

The U.S. Fish and Wildlife Services' National Wetlands Inventory (NWI) geospatial dataset is a publicly available resource that provides detailed information on the abundance, characteristics and distribution of America's wetlands. These data support a multitude of applications for users throughout the Nation. Whether it is wetland conservation or restoration, emergency response, species habitat assessment and population modeling, infrastructure and recreation planning, or other types of decision support, NWI data have been a trusted resource for over 40 years.

NWI provides users with scientifically based information on wetlands and deepwater habitats to promote the understanding and conservation of the Nation's wetland resources through research, education, resource management and policy development.

NWI Mapper Use Statistics

The Wetlands Mapper is the primary public interface to the NWI geospatial dataset and is designed to deliver easy-to-use, map like views of the Nation's wetland and deepwater resources. It provides an interactive environment for users to view, query and print wetlands data along with other resource information. The Wetlands Mapper is the Nation's go-to resource for wetlands information as supported by the statistics below.

Over 525,000 Mapper Views annually
Over 40,000 datasets downloaded annually
Nearly 260,000 maps printed last year
Over 270,000 unique users each year

NWI Use Map Gallery

Click on the maps below to view a spatial representation of where users accessed NWI geospatial data throughout the U.S. and its territories in federal fiscal years 2017, 2018 and 2019. These maps track valuable information on how the public uses NWI wetland data to inform future projects.

***New StoryMap***

Patterns in data can tell interesting stories. View this StoryMap that examines the patterns of wetlands maps printed from the Wetlands Mapper.

NWI Analysis Examples

The NWI program provides users with a robust and powerful dataset that is used to address questions and support decision-making in various fields of study. Click on the topics (tabs) below to access example applications that utilized NWI data.

NWI Use Library Searches


ServCat logo

ServCat is an online repository for USFWS documents, reports, management plans and data. Explore more NWI data uses from within the USFWS.

WorldCat Logo

WorldCat is the world's largest network of library content containing collections from over 72,000 libraries worldwide. Explore NWI data uses nationwide.

NWI Use in Web Applications

NWI geospatial data can be displayed on other web applications through our online mapping services. Here are some examples of federal and state agencies that consume NWI geospatial data to enhance their own map viewers.


- Last updated: February 11, 2021 -