Monthly and seasonal river flow information, and our outlook for the coming three months.
May 2010 river flows
May river flows were variable across New Zealand, ranging from well below normal in western parts of the North Island, to well above normal in the East Cape and much of Canterbury.
River flows, March to May 2010
Flows over the last three months (March to May 2010) were normal to well below normal over the entire North Island and the northern South Island. In contrast, flows were above normal or well above normal in the much of the rest of the South Island.
Outlook by region, June to August 2010
| Northern North Island | Normal or below normal streamflows are likely |
| Southwest North Island | Normal or below normal streamflows are likely |
| Southeast North Island | Normal streamflows are likely |
| Northern South Island | Normal streamflows are likely |
| West and south South Island | Normal streamflows are likely |
| Eastern South Island | Normal streamflows are very likely |
Maps and more details of our three-monthly outlook for river flows, soil moisture, rainfall, and temperature are available in NIWA's Seasonal Climate Outlook.
See the latest New Zealand Climate Update for more general climate forecasts and restrospective information.