Seasonal data from the National River Water Quality Monitoring Network.
Freshwater Update 45, May 2011
The latest water resources information and research updates from NIWA's National Centre for Freshwater.
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.
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.
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