A map shall be submitted by the subdivider as a basis for informal discussion. The map shall show the following information:
(a) Application for preliminary discussion map.
(b) Location: tract boundaries, township and north point.
(c) Existing highways and proposed streets on and adjacent to the tract.
(d) Statement of how sewage disposal and water supply will be provided.
(e) Utility transmission lines and easements.
(f) Existing zoning districts. Topography (U. S. G. S. or better).
(g) Watercourses and wetlands subject to flooding.