. . "Derwent Valley" . . "River Derwent (Tasmania)" . . "0.0" . . "River Derwent" . . "River" . "Derwent Estuary" . . . . . "River Derwent." . "Derwent estuary, Tasmania" . . "Derwent" . "River Plenty" . . . . . . . . "Derwent valley" . . "bridges" . . "Upper River Derwent" . "239000.0" . . . . "The Derwent" . . . . . . "River Derwent (Tasmania)" . . . . "Derwent River" .