riverine       
adjective  geography specialist uk/ˈrɪv.ər.aɪn/ us/ˈrɪv.ər.aɪn/
 河流的;河上的;在河岸的
relating to or found on a river or rivers, or the banks of a river
  Alaska's coastal and riverine villages are plagued by erosion. 阿拉斯加的沿海和沿河村庄深受水土流失之苦。 
 - More examples
 - These clinics now serve some 400 riverine villages, and 1,600 on the mainland.
 - the director of UM's Center for Riverine Science and Stream Renaturalization
 - The focus may switch to emergency relief from natural disasters, such as floods, cyclones and tsunamis in coastal and riverine regions of Asia.
 - The erosion will have a detrimental effect on water quality and riverine life.