Where district boundaries are indicated as approximately following the center lines or right-of-way lines of streets, highways, public utility easements or watercourses, said boundaries shall be construed to be coincident with such lines.

Where district boundaries are indicated as approximately following the Town boundary line, property lines, lot lines or projections thereof, said boundaries shall be construed to be coincident with such lines or projections thereof.

Where district boundaries are so indicated that they are approximately parallel to the Town boundary line, property lines, lot lines, right-of-way lines or projections thereof, said boundaries shall be construed as being parallel thereto and at such distances therefrom as indicated on the Zoning Map or as shall be determined by the use of the scale shown on the Zoning Map.

Where a district boundary line divides a lot in a single or joint ownership of record at the time such line is established, the regulations for the less restricted portion of such lot shall extend not more than 30 feet into the more restricted portion.

In all other cases, where not dimensioned, the location of boundaries shown on the map shall be determined by the use of the scale appearing thereon, but in no instance will a district depth be less than the specified minimum lot depth shown for each district in the Density Control Schedule.[1]

District boundaries may be coterminous with drainage ridge lines as part of sanitary sewer engineering studies. The engineering drawings should be checked to determine the sewer districts as determined by gravity flow.