The DEP Regions layer represents boundaries used by the Massachusetts Department of Environmental Protection for planning and administrative purposes
The layers are named REGDEP_ARC (lines), REGDEP_POLY (polygons), and REGDEP_ANNO_REG (annotation, for region name labeling).
The polygon feature class was updated in August 2021 to be based on the Survey Towns Boundaries (previously based on the USGS-based town boundaries).
The polygon attribute table contains the following items:
|REGION||DEP Administrative Region|
|DEP_ID||DEP Region Identifier|
Codes are as follows:
|WEST||1||Western region - Springfield headquarters|
|CEN||2||Central region - Worcester headquarters|
|NE||3||Northeast region - Woburn headquarters|
|SE||4||Southeast region - Lakeville headquarters|
The arc attribute table contains the item OUTLINE, where 1 = state borders, 4 = coastline, and 14 = DEP region boundaries.
MassDEP maintains this layer. Boundaries were modified in May, 2006, to reflect the re-assignment of some towns to other regions by MassDEP.
Updated in April 2022 to reflect recent edits to the Municipalities layers.