_:b1215026 . _:b1215026 "Natural freshwater surface streams of considerable volume and a permanent or seasonal flow, moving in a definite channel toward a sea, lake, or another river; any large streams, or ones larger than brooks or creeks, such as the trunk stream and larger branches of a drainage system."^^ . _:b1215026 "ADL:FTT"^^ . _:b1215026 . _:b1215026 .