For purposes of this ordinance, the City of Woodbine, Georgia, is divided into eight (8) districts designated as follows:

"R-1" Low-Density Residential District.

"R-2" Single-Family Residential—Mobile Home District.

"R-3" Medium-High Density Residential District.

"B-1" Central Business District.

"B-2" Roadside Business District.

"I-1" Light Industrial District.

"I-2" General Industrial District.

"M-H" Mobile Home Park District.

The boundaries of these districts are hereby established as shown on the Zoning Map. Said map is entitled "Zoning Map of Woodbine, Georgia" and dated August 1, 1972, and is hereby made a part of this ordinance.

Unless otherwise indicated, the district boundary lines are property or lot lines, land lot lines, the center lines of streets or such lines extended, the corporate limit lines, a line midway between the main tracks of a railroad, or the center line of streams or drainage ways.