riparian

from WordNet (r) 3.0 (2006)

riparian
    adj 1: of or relating to or located on the banks of a river or
           stream; "riparian land"

from The Collaborative International Dictionary of English v.0.48

Riparian \Ri*pa"ri*an\, a. [L. riparius, fr. ripa a bank. See
   {River}, and cf. {Arrive}.]
   Of or pertaining to the bank of a river; as, riparian rights.
   [1913 Webster]