"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.
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. "
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|1.||Observed streambed sedimentation, 1990 2011||186 KB||
|Category||Environmental Reporting > Freshwater > Streambed sedimentation|
|Tags||water, New Zealand, WATER-Hydrology|
|Metadata||Dublin Core, ISO 19115/19139|
|Data type||Vector multipolygon||Feature count||11684|
|Attributes||AREA, PERIMETER, REACH_ID, NZREACH, OBJECTID_1, NZREACH_1, FINES, SD, RANGE, COUNT, SHAPE_Length|
|Services||Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed|