Proper noun
A major river in Canterbury, New Zealand, which flows into the Pacific Ocean.
A small town in Canterbury, New Zealand, on the south bank of the river.
Source: en.wiktionary.orgThe Hororata-Acheron water supply delivers water to a wide area from the Acheron River, east of Lake Coleridge, to the Rakaia River and down to Ardlui Rd and to the true right of the Selwyn River. Source: Internet
Road work will also take place on North Rakaia Terrace with traffic controls in place. Source: Internet