The Collaborative International Dictionary of English v.0.48:

Ford \Ford\, v. t. [imp. & p. p. Forded; p. pr. & vb. n.
   Fording.]
   To pass or cross, as a river or other water, by wading; to
   wade through.
   [1913 Webster]

         His last section, which is no deep one, remains only to
         be forted.                               --Milton.
   [1913 Webster]

WordNet (r) 3.0 (2006):

fording
    n 1: the act of crossing a stream or river by wading or in a car
         or on a horse [syn: ford, fording]