Observed streambed sedimentation, 1990–2011

"Fine sediment is the collective term for inorganic particles deposited on the streambed less than 2mm in size. Urban development and agriculture and forestry around waterways can increase the amount of sediment entering river systems. Sedimentation can clog space between pebbles that are used by aquatic insects and fish, alter food sources, and remove sites used for egg laying. Excess sediment can affect the appeal of rivers and streams for recreation. This dataset relates to the ""Streambed sedimentation"" measure on the Environmental Indicators, Te taiao Aotearoa website.

Field names NZREACH Stream segment label SEDO Predicted observed percentage fine sediment cover, i.e. contemporary state SEDE Predicted expected percentage fine sediment cover, i.e. reference state. "

Data and Resources

Additional Info

Field Value
Theme
Author Ministry for the Environment
Maintainer Ministry for the Environment
Maintainer Email Ministry for the Environment
Source https://data.mfe.govt.nz/layer/52678-observed-streambed-sedimentation-19902011/
Source Created 2016-01-11T00:49:08.360090Z
Source Modified 2016-02-18T20:31:27.479283Z
Language English
Spatial {"type": "MultiPolygon", "coordinates": [[[[166.50010512144055, -47.230469966231006], [166.50010512144055, -34.39662808422686], [178.54068504251202, -34.39662808422686], [178.54068504251202, -47.230469966231006], [166.50010512144055, -47.230469966231006]]]]}
Source Identifier https://data.mfe.govt.nz/layer/52678-observed-streambed-sedimentation-19902011/
Dataset metadata created 2 February 2020, last updated 3 March 2025