The National Park Service is carrying out assessments of the natural resource condition (NRCA) for nearly 300 of the National Parks throughout the country deemed to have significant natural resources. This project, to assess condition of Harpers Ferry and Chesapeake & Ohio Canal National Historical Parks and Catoctin Mountain Park in the National Capital Region, is a synthesis project aimed at collating and synthesizing all available data to assess current status and trend for each metric, combining these into an overall framework. The focus of this study has been to develop a habitat based framework to assess natural resource condition.