The existing recorded name, Clarence River, altered to Waiau Toa / Clarence River.
Published in the New Zealand Gazette on 18 January 2018.
See below for the reports considered by the NZGB.
A river flowing for approximately 200km from its source below Clarence Pass in St James Range, generally southeast, northeast, east, and southeast, to its mouth at the South Pacific Ocean, approximately 33km northeast of Kaikoura. NZTopo50-BS24 763386 (source) to NZTopo50-BT28 768305 (mouth).