Clarity measures underwater visibility in rivers and streams. Turbidity measures how cloudy the water is. High clarity and low turbidity indicate good river water quality and healthy stream ecosystems.
We report on measured and modelled clarity and turbidity in Aotearoa New Zealand's river water and how they change over time.
River water quality in New Zealand is described using six indicators: clarity and turbidity, Escherichia coli, heavy metals, macroinvertebrate community index, nitrogen, and phosphorus.
Definitions and metadata has more information about this indicator.
Key findings
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