This GIS datalayer is based upon the NH Conserved/Public Lands attribute model published by NH Granit. In 2014 NRPC began with that statewide dataset and refined the geography of those parcels to coincide with the NRPC parcel dataset. From there, NRPC mapped approximately 400 additional conserved land trascts based upon input from the area's conservaton commissions. Using the Hillsborough County Registry of Deeds online databse, the NRPC conducted extensive deed research to determine key attributes such as primary protection mechanism(s), managing agency, etc.

NRPC publishes these data on maps and in its flagship online viewer. There is no systematic process for maintenance; rather, corrections and edits are made as they are reported by stakeholders.

Disclaimer: This dataset is an NRPC interpretation of original source material and maps. It is appropriate for mapping and planning purposes; it should not be utilized where legal and surveyed boundaries are required. NRPC does not make any warranty, representation, or guarantee as to the content, sequence, accuracy, timeliness, or completeness of this information. The user should not rely on these data without verifying its accuracy independently. NRPC and its member communities, respectively, explicitly, disclaim any representations and warranties including, without limitation, the implied warranties of merchantability and fitness for a particular purpose. NRPC and its member communities shall assume no liability for errors, omissions, inaccuracies in the information provided regardless of how caused and for any decision made or action take or not taken by the user in reliance upon any information or data furnished hereunder.