-
Rainfall Deciles (RD)
If you list all the historic rainfall totals for a particular month and for a specific location, rank these from lowest to highest, then divide the list into ten equal parts, you have identified the ten rainfall deciles for that month and for that location. -
The Intergovernmental Panel on Climate Change (IPCC)
Education ResourceThe Intergovernmental Panel on Climate Change (IPCC) is charged with assessing the most up to date scientific, technical and socio-economic research on climate change. -
Sediment and agriculture
How may agricultural activities increase sediments in waterways? -
Stepping into the river
Feature story06 June 2017NIWA discusses, in depth, this year's most asked question—what is happening to our fresh waterways? -
Tuna - solutions: upstream passage for elvers at large barriers
The need to provide upstream passage facilities for ensuring the long term sustainability of migratory freshwater fish populations is now well recognised. -
Stormwater - an introduction
Stormwater poses risks to NZ’s urban streams & coastal waters, affecting ecological health & the cultural, social, & economic value of these environments. -
Our management
NIWA is managed by an Executive Team reporting to the Chief Executive Officer. Science and operational matters are handled by two sub-groups. -
Banded kōkopu
Banded kōkopu juveniles are very good climbers and will try to escape from buckets by clinging to and wriggling up the sides. -
Mining activities
A range of different mining techniques have been developed to obtain these valuable resources -
Summer Series 6: Nippy creatures that share your swim
News article06 June 2017 -
Using trigonometric functions to model climate
Education ResourceYour task is to create a model of the data to predict the times during the year that a location would be pleasant to visit