Grading and drainage changes near Essex County wetlands fall under conservation commission control. Altering land within the 100-foot buffer zone or redirecting runoff toward a wetland requires an order of conditions, and towns require grading permits that keep drainage on the parcel.
Under MGL Chapter 131, Section 40, regrading or altering drainage within 100 feet of a wetland or bank requires a Notice of Intent and conservation commission order of conditions. Essex municipalities also enforce grading bylaws barring runoff onto abutting property and requiring drainage plans for significant earthwork. Post-construction runoff must meet MassDEP stormwater standards for peak rate control and groundwater recharge.
Unpermitted grading that alters drainage or floods a neighbor draws stop-work orders, conservation enforcement fines up to $25,000, and civil liability for downstream flooding damage.
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