Monthly and seasonal river flow information and our outlook for the coming three months.
Click on the map to enlarge
Cumulative flows over the three months, July to September 2011. Click on the map to enlarge
Seasonal data from the National River Water Quality Monitoring Network.
A new wetlands construction guide has been produced by NIWA's freshwater team.
We are regularly adding new material to our website. Here are a few examples.
Abstracting water from rivers is likely to cause changes in river flows, endangering habitats and making supply unreliable for downstream users. NIWA is working to develop river flow rules that can be applied at a local level to prevent these problems.
During summer the concentration of oxygen in the bottom waters, or 'hypolimnion' of Lake Taupo decreases. To find out what factors are responsible for the total oxygen decrease, NIWA scientists have been monitoring the inputs and outputs of oxidisable matter to the lake.
A look at river flows over the last three-month period
Follow the link for the latest national water resources data and seasonal outlook.
Our latest water quality data from around the country, showing results from January to March 2011.
What we predicted for the first three months of 2011, and what actually happened.
River flows information for March, and the first quarter of 2011.
Our last three-monthly predictions, and what actually happened.
River flows information and outlooks
A new resource has been produced to aid regional councils, community groups, and others keen to monitor and evaluate their stream restoration work.
NIWA has invested in a new tool which continuously monitors a range of water quality parameters and delivers real-time data. Already we have some new revelations about the way diffuse pollutants move into watercourses.
Scientists have recently summarised water quality data from streams in two similar Waikato catchments where, since 2001, the land has been managed quite differently. The results have produced some surprises.
