Winthrop council tables Boot Cove Lane zoning-map amendment after hours of testimony

A proposed amendment to Winthrop's official zoning map that would redraw resource-protection boundaries near Boot Cove Lane was tabled Monday after more than an hour of presentations and public comment.

Dawn Emerson, the town planner, told the council the planning board used parcel-layer mapping and LiDAR-derived slope data to identify contiguous areas with slopes of 20% or greater and proposed moving the resource-protection boundary to follow those contours. "The parcels that have been depicted in the application are currently zoned resource protection," Emerson said, and the board proposed clarifying that the shoreland buffer would be measured from the top of bank in areas where steep slopes exist.

Planning-board members said the change is a pilot intended to correct lines that were drawn from coarse USGS contours in earlier decades. "The red line is the new resource protection line. The black line is the shoreland zoning," Greg Stewart, a planning-board member, said while explaining how the two overlays would coexist and why the contour-following line is more accurate than the older 250-foot blanket delineation.

But watershed and public-health representatives said the proposal risked weakening protections for Lower Narrows Pond and could produce many new nonconforming lots. Wendy Dennis, a limnologist and 40-year resident, urged the council to reject or at least table the request so the mapping project could be reviewed. "I would ask that the applicant not be granted the rezoning request," Dennis said, arguing the planning-board memo misinterpreted state shoreland requirements and warning the change could increase pollutant loading.

Council members voiced conflicting views about scope and process. Some supported using improved topographic data to correct mapping errors, while others worried the approach—if applied parcel by parcel—would look like spot zoning and might not be well understood by property owners. After deliberation, the council voted to table the amendment and asked the planning board to meet with the watershed district and present clearer map graphics and proposed ordinance language before returning it to the council.

Next steps: the planning board will continue its town-wide mapping work with a regional technical partner and the council asked for a follow-up that shows existing vs. proposed lines, the proposed setback language, and specific examples of affected lots.