Summary of Areas for Potential Addition to the National Park System

Since 2012, six studies authorized by Congress completed by the National Park Service have found that the resource studied met the criteria required for national park unit designation. This list includes only study resources that met all required criteria and that have not yet been designated by Congress, nor established as a national monument by presidential proclamation.

List of Areas Recommended for Study

US Code (54 USC 100507) also directs the National Park Service to recommend areas for study for their potential to be included in the National Park System. Of the multiple reconnaissance surveys completed by the National Park Service since 2012, a number of surveys have resulted in Congressional legislation directing a full study.

One survey, the Cahokia Mounds Reconnaissance Survey (2019), found that the study area has the potential to meet established National Park System criteria for new national park units and recommended that a special resource study be authorized by Congress to fully evaluate it using a special resource study process. Congress has yet to authorize a special resource study of Cahokia Mounds. Email us for more information about this survey report.

The National Park Service continues to use the National Park Service System Plan , completed in 2017 and transmitted to Congress in 2022, for guidance on identifying important resource gaps, underrepresented cultural resources and values, and underrepresented natural resources in the National Park System.

Additional Resources

Ranger giving a tour in front of a mural of Harriet Tubman
Adding to the System

When adding new places or expanding current sites in the National Park System, there are first assessments.

Historic farm on a prairie
Recent Changes to the System

View of list of some of the most recent changes to national park units, including new units and name changes.

Several National Park Service employees on a trail in a prairie
Types of Studies

Before there is a new National Park Service designation, Congress can authorize a study to assess the site and associated resources.

Park Ranger writing on a white board
Current Status Updates

Get status updates on ongoing studies of potential new National Park System designations.

Last updated: June 28, 2024