Below is an alphabetical list of ACECs, with numbers that correspond to the statewide map pdf format of MA Area of Critical Environmental Concern Map in B & W
file size 1MB . Each ACEC name links to a summary sheet with further information. There is also a complete list of ACECs pdf format of Massachusetts Areas of Critical Environmental Concern
and the 76 towns that have ACECs within them. There are currently 30 ACEC designations, totaling approximately 268,000 acres statewide.

Designation documents describe the resources of the designated area, the purpose of designation, and the legal boundary. They are available online as downloadable pdf files linked on each specific ACEC page below. Maps can be viewed online and accessed via the MassGIS website. See the Links & Downloads column on this page for About ACEC Maps and Boundaries.

A digital data layer of ACEC boundaries is available for free downloading at the MassGIS Website. Large format color printed theme maps are also available to order at a cost from the MassGIS Website.

Massachusetts Areas of Critical Environmental Concern

Total Approximate Acreage: 268,000 acres
Approximate acreage and designation date follow ACEC names below.

Please note: Links to various sites associated with ACECs and summary resource sheets are listed under each specific ACEC.

ACEC acreages above are based on MassGIS calculations and may differ from numbers originally presented in designation documents and other ACEC publications due to improvements in accuracy of GIS data and boundary clarifications.  Listed acreages have been rounded to the nearest 50 or 10 depending on whether boundary clarification has occurred.  For more information please see About ACEC Maps and Boundaries.