Sediment publications, research and newsletters

Sediment control research projects underway

• Providing the sediment removal efficiency of decanting earth bunds which are short-term measures becoming more prevalent on earthwork sites.
• In conjunction with NIWA, developing optimal treatment efficiencies for chemical treatments.

Past research available

• Stabilisation.
• Effectiveness of mulching Earthworked Surfaces.
• Modelling effects of muddy water on shellfish.

Environmental monitoring of streams

• Ecological Health of Auckland Streams.
• These results have led to recommendations of the implement of Low Impact Designs, and it also showed that the adverse effects due to sediment deposition are long term.
• Further Sediment Contaminants monitoring click for more info has identified that the southern shore of Waitemata Harbour, Tamaki Estuary and Hobson Bay all have elevated metal concentrations, which are likely to effect the ‘health' of ecological communities.

Factsheets

The factsheets below give further information on sediment management.

• Sediment Management - Erosion Control (158.5 KB PDF)
• Sediment Management - Erosion Control vs Sediment Control (76.7 KB PDF)
• Sediment Management - As Builts - Decanting Earth Bunds (62.9 KB PDF)
• Sediment Management - As Builts - Diversion Channels and Bunds (77.0 KB PDF)
• Sediment Management - As Builts - Sediment Retention Ponds (117.0 KB PDF)
• Decanting Earth Bund factsheet (199.6 KB PDF)
• Rain Garden factsheet (408.0 KB PDF)
• Silt Fence and Super Silt Fence factsheet (170.8 KB PDF)
• Stormwater Inlet Protection factsheet (142.3 KB PDF)
• Stream Ecological Valuation factsheet (122.1 KB PDF)
• Swale factsheet (178.9 KB PDF)

• Stream facts - Works within a Watercourse - Stream Habitat (115.4 KB PDF)
• Stream facts - Works within a Watercourse - Consent Requirements (107.3 KB PDF)
• Stream facts - Works Within a Watercourse - Streamworks Methodology (87.1 KB PDF)
• Stream facts - Works Within a Watercourse - Erosion and Sediment Controls (143.6 KB PDF)
• Stream facts - Works Within a Watercourse - Culvert sizing and design (160.2 KB PDF)
• Stream facts - Temporary Stream Diversion Design (351.2 KB PDF)
• Stream facts - Works Within a Watercourse - Fish Passage (167.5 KB PDF)
• Stream facts - Works Within a Floodplain - Consent Requirements (55.5 KB PDF)
• Stream facts - Construction of a Bridge - Consent Requirements (53.6 KB PDF)

Imprint newsletter

Here you can view the latest version of Imprint newsletter:

• Imprint Edition 70 October 2008 (463.1 KB PDF)
• Imprint Edition 69 June 2008 (467.7 KB PDF)
• Imprint Edition 68 March 2008 (283.1 KB PDF)
• Imprint Edition 67 December 2007 (1.1 MB PDF)
• Imprint Edition 66 January 2007 (1.0 MB PDF)
• Imprint Edition 65 July 2006 (958.1 KB PDF)