rȇčnī, rijȇčnī angolul

fluvial▼(of, pertaining to, inhabiting, or produced by the action of a river or stream)
adjective
[UK: ˈfluː.vɪəl] [US: ˈfluː.viəl]

riverine▼(of or pertaining to rivers)
adjective
[UK: ˈrɪ.və.raɪn] [US: ˈrɪ.və.raɪn]