Utilities on and adjacent to the tract: location,
size and invert elevation of sanitary, storm and combined sewers,
culverts, ditches or other facilities for drainage; location and size
of water mains; location of gas lines, fire hydrants, electric and
telephone poles and streetlights. If water mains and sewers are not
on or adjacent to the tract, the direction and distance to and size
of nearest ones shall be indicated, showing invert elevation of sewers
or culverts. Where drainage is to be a natural watercourse, lake,
swamp, sink or roadside or drainage ditch, the elevation of water
in such watercourse or ditch at recognized flood stage shall be shown.