NPSNCRN

Inventory & Monitoring is a Division of the National Park Service. The National Capital Region Network Inventory & Monitoring Network (NCRN I&M) is dedicated to improving park management through greater reliance on scientific information. Visit us at http://science.nature.nps.gov/im/units/ncrn/index.cfm.
 
NCRN I&M serves 11 park units in Virginia, West Virginia, Maryland, and the District of Columbia that share common natural resources. The parks are:
Antietam National Battlefield (MD)
Catoctin Mountain Park (MD)
Chesapeake and Ohio Canal National Historical Park (DC, MD)
George Washington Memorial Parkway (DC, MD, VA)
... Harpers Ferry National Historical Park (MD, VA, WV)
Manassas National Battlefield Park (VA)
Monocacy National Battlefield (MD)
National Capital Parks - East (DC, MD)
Prince William Forest Park (VA)
Rock Creek Park (DC)
Wolf Trap National Park for the Performing Arts (VA)