Source : Webster's Revised Unabridged Dictionary (1913)

Topographic \Top`o*graph"ic\, a. Topographical
\Top`o*graph"ic*al\, [Cf. F. topographique.]
   Of or pertaining to topography; descriptive of a place. --
   {Top`o*graph"ic*al*ly}, adv.

   {Topographical map}. See under {Cadastral}. -- Topographical
      surveying. See under {Surveying}.

Source : WordNet®

topographically
     adv : with regard to topography; "the geological environment is
           the primary factor in determining the character of a
           country not only topographically but historically"