Stormwater management

NIWA has a range of services and research capabilities to assist with assessing and managing the effects of stormwater and urban development on streams, estuaries and harbours.

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    Stormwater - an introduction

    Stormwater is a major concern for New Zealand because of its potential effects on the ecological health of our urban streams and coastal waters, as well as on the economic, social and cultural value of these environments.
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    Urban hydrological monitoring

    Urban drainage systems include pipe networks, streams and rivers, often in a highly modified condition.
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    Characterising stormwater quality

    Urban stormwater can contain a variety of contaminants at a wide range of concentrations, collected as the rainwater runs over impervious surfaces.
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    Assessing the performance of stormwater treatment

    Stormwater treatment is becoming increasingly important as we learn more about the adverse effects of diffuse pollution on our receiving environments.
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    Climate change and stormwater

    Stormwater management is recognised by the Ministry for the Environment as a local government service that is potentially at risk from climate change and may need adaptation.
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    Modelling for stormwater management

    The objectives of this case study were to provide an example of how a risk assessment of an urban drainage system can be undertaken using an existing operational model
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    Urban impacts on the environmental, social, economic and cultural values of water bodies

    NIWA is leading research aimed at helping local government to plan the development of New Zealand's cities and settlements in a way which protects and enhances the services and values associated with urban water bodies.