The Natural Resource Stewardship and Science Directorate (NRSS) provides scientific, technical, and administrative support to national parks for the management of natural resources. NRSS develops, utilizes, and distributes the tools of natural and social science to help the National Park Service (NPS) fulfill its core mission: the protection of park resources and values.

NRSS provides leadership and expertise to ensure understanding, awareness, representation, and stewardship of the natural resources of the NPS so that they remain unimpaired for future generations.

With staff located in Fort Collins and Lakewood, Colorado, and Washington, D.C., NRSS includes the following programs and offices: