For the purposes of this chapter, the incorporated territory of Pocomoke City is hereby divided into the following districts:

The boundaries of these districts are hereby established as shown on the Zoning Map of Pocomoke City, Maryland, which map, together with all notations, references and other matters thereof, shall be and is hereby made a part of this chapter. Said Zoning Map, properly attested, shall be and remain on file in the office of the Zoning Inspector.

Except where referenced on said map to a street line or other designated line by dimensions shown on said map, the district boundary lines are intended to follow property lines, lot lines or the center lines of streets, alleys, railroads, small streams or other identifiable landmarks as they existed at the time of the adoption of this chapter; but where a district line obviously does not coincide with the property lines, lot lines or such center lines or where it is not designated by dimensions, it shall be deemed to be 200 feet back from the nearest street line, in case it is drawn parallel with a street line, or its location shall be determined by scaling in other cases.

Where a district boundary line as established in this article or as shown on a Zoning Map divides a lot which was in single ownership and of record at the time of enactment of this chapter, the use authorized thereon and the other district requirements applying to the least restricted portion of such lot under this chapter shall be considered as extending to the entire lot, provided that the more restricted portion of such lot is entirely within 50 feet of said dividing district boundary line. The use so extended shall be deemed to be conforming.

Questions concerning the exact location of district boundary lines shall be determined by the Board of Appeals as provided in § 230-107B and in accordance with rules and regulations which it may adopt.

Whenever any street, alley or other public way is abandoned by official action as provided by law, the zoning districts adjoining the sides of such public way shall be automatically extended, depending on the side or sides to which such lands revert, to include the right-of-way of the public way thus vacated, which shall thenceforth be subject to all regulations of the extended district or districts.

In case any territory has not been specifically included within a district, or where territory becomes a part of the incorporated area of Pocomoke City by annexation or otherwise, such territory shall automatically be classified in the R-1 District until otherwise classified.