The Collaborative International Dictionary of English v.0.48:

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.
   [1913 Webster]

   Topographical map. See under Cadastral. -- Topographical
      surveying. See under Surveying.
      [1913 Webster]

WordNet (r) 3.0 (2006):

topographic
    adj 1: concerned with topography; "a topographical engineer"; "a
           topographical survey"; "topographic maps" [syn:
           topographical, topographic]

Moby Thesaurus II by Grady Ward, 1.0:

28 Moby Thesaurus words for "topographic":
   approximative, areal, cartographic, chorographic, estimative,
   geodetic, geographic, geographical, hypsographic, locational,
   measuring, mensural, mensurational, mensurative, metric,
   navigational, numerative, oceanographic, positional, quantitative,
   regional, sectional, situal, situational, territorial, valuational,
   valuative, zonal