For the purpose of this chapter, Charlestown Township is hereby divided into 15 classes of districts which shall be designated as follows:

The locations and boundaries of such districts shall be as shown upon the maps attached to and hereby made a part of this chapter, which shall be designated "Zoning Map," the "Flood Hazard District Map," and "Steep Slope Conservation District Map." The said maps, and all the notations, references, and other data shown thereon, shall be as much a part of this chapter as if fully described herein.

In the case of the Flood Hazard District, rules for interpretation of district boundaries are contained in Part 11. In the case of the Steep Slope Conservation District, rules for interpretation of district boundaries are contained in Part 12. For all other districts, the boundaries between districts are, unless otherwise indicated, either the center line of streets, rights-of-way, or watercourses, or such lines extended, or lines parallel thereto. Where the boundaries of a single district are indicated as including directly opposite sides of a street, right-of-way, or watercourse, for any portion of its length, the district so indicated shall be construed to apply to the entire bed of such street, right-of-way or watercourse, lying within such portion of its length. Where uncertainty exists as to the location of any said boundaries as shown on the Zoning Map, the following rules shall apply: