orohydrographical
/ˌɒrəʊhʌɪdrəˈɡrafɪkl/ /ˌɔːrəʊhʌɪdrəˈɡrafɪkl/Physical Geography
adjective
Of or belonging to orohydrography; relating to the hydrographic features of a region as they are influenced by mountains.
Origin
Mid 19th century; earliest use found in Journal of the Royal Geographical Society of London. From oro- + hydrographical.