Is Metal Detecting allowed: Yes, on coastal and inland sandy beaches only.
Excerpt from Park Regulations below.. You can find the regulations HERE:
12.04: Rules of Conduct of DCR Properties — Generally
(12) With the exception of coastal and inland sandy beaches, no person may use of offer for use metal detectors, except with permission from DCR Personnel, for the purposes of location lost personal property.
Also found that it is prohibited in Watersheds.
Wachusett Reservoir Watershed - Prohibited
Quabbin Reservoir Watershed - Prohibited
Ware River Watershed - Prohibited
FMDAC Disclaimer: FMDAC assumes no responsibility for any person who knowingly or accidentally violates any state park regulation. Although FMDAC will try to keep this information current we cannot anticipate how each regulation will be interpreted by a specific park department, park employee or other government employee. It is the sole responsibility of each individual to know and obey the regulations of the park or area they are visiting and or metal detecting.