Rainy River (Marlborough)

Rainy River is a small river located in the Marlborough region of New Zealand's South Island. It is primarily known as a tributary of the Wairau River, which is one of the major rivers in Marlborough. The Rainy River flows from the Richmond Range mountains, draining a relatively small catchment area before joining the Wairau.

The river's name likely originates from a perceived tendency for frequent rainfall in the area of its headwaters. The surrounding terrain is characterized by steep, forested hills.

While not a significant river in terms of length or water volume compared to the Wairau, the Rainy River contributes to the overall flow and ecology of the Wairau River system. It is also likely used for recreational purposes such as hiking and possibly fishing, although detailed information about specific recreational activities is limited. Its contribution to the Wairau River makes it part of the larger Wairau Plain irrigation scheme, which is vital for the region's agriculture, particularly viticulture (wine grape growing).