Of greatest significance are the landscape and associated vegetation types of the valley floors of the Ngaruroro catchment, including the Panoko and Mangamingi Streams. The upper Ngaruroro Valley is the best-preserved example remaining of an alluvial river landform and associated indigenous vegetation types, associated with the Taupo 232AD eruption. Similar landforms occur in the upper Taruarua and Taharua valleys however the vegetation of both of these areas has been modified to a much greater extent. The wetlands deserve special mention because of their near pristine condition and because together they make up the most significant area of wetland habitat within the entire Kaimanawa Ecological District.