Rakaia River
General data
- Name: Rakaia River
- Water system: Pacific Ocean
- Water type: River
- Progression: Pacific Ocean -> Planet Earth
- Climates: Temperate
- Continents: Australia & Oceania
- Countries: New Zealand
The Rakaia River is in the Canterbury Plains in New Zealand's South Island. It is one of the largest braided rivers in New Zealand. The Rakaia River has a mean flow of 203 cubic metres per second (7,200 cu ft/s) and a mean annual seven-day low flow of 87 m3/s (3,100 cu ft/s). In the 1850s, European settlers named it the Cholmondeley River, but this name lapsed into disuse. The name Rakaia comes from Māori "Ō Rakaia", meaning the place where people were arranged by ranks.
It rises in the Southern Alps, travelling 150 km (93 mi) in a generally easterly or southeasterly direction before entering the Pacific Ocean 50 km (31 mi) south of Christchurch. It forms a lagoon as it reaches the ocean.