The existing recorded name, Waiau River, altered to Waiau Uwha River.
Published in the New Zealand Gazette on 18 January 2018.
See below for the reports the NZGB considered.
A river flowing generally south and east for approximately 160km from its source at Thompson Pass in the Spenser Mountains to its mouth at the South Pacific Ocean, approximately 50km southwest of Kaikoura. NZTopo50-BS24 699363 (source) to NZTopo50- BU26 304632 (mouth).