Awaruku Stream Assessment
Summary of report findings
Awaruku Stream catchment contains the Long Bay Regional Park and a mixture of residential and rural land use. The Awaruku Stream has been heavily modified as a result of urbanisation that has occurred only recently. Further significant development is anticipated within the catchment and the remaining rural land is expected to change to a combination of residential, rural, recreation and business land use.
Documents
Awaruku Stream report PDF 
(912KB)
Awaruku Stream maps (PDFs)
Links
North Shore stream assessments overview page
You will need Acrobat Reader to view some documents on this page, which can be downloaded free from www.adobe.com
| Length | 4.1km |
|
| Size Of Catchment | 300ha |
|
| Vegetation Cover | 19% (56ha), generally in the upper catchment. |
|
| Imperviousness | 26.1% |
|
| District Plan Land Use | Recreation | 11% |
| Residential | 60% | |
| Residential Expansion Zone | 15% | |
| Road | 14% | |
| Recreational Use | High, known public use of stream locally | |
| Receiving Environment | Across Long Bay Beach into Long Bay Marine Reserve | |
| Substrate | Either silt/mud or concrete lined | |
| Natural Wetlands | Nil | |
| Artificial Wetlands | 2 | |
| Periphyton | Generally below nuisance levels | |
| Macrophytes | Probable management issues in the main channel | |
| Macroinvertebrates | Moderate MCI scores | |
| Fish | 14 species of native fish (including 1 predominantly marine species) | |
| Potential Man-Made Barriers to Fish Passage to Upstream Habitat | 12 | |
| Channel Modification | Heavily modified | |
| Erosion around Structures | 1 structure with erosion and 3 with slight erosion | |
| Bank Erosion | Minimal | |
| Temperature | Likely to be of concern at times | |
| Suspended Solids, Turbidity And Visual Clarity | Overall relatively high | |
| Oxygen and Oxygen Demand | Oxygen levels low at times. Moderate oxygen demand suggesting some organic pollution of the stream | |
| Nutrients | Generally low but elevated levels during wet weather in the lower stream due to agricultural runoff. | |
| Contaminants | Overall typical of urban streams |
|
| Bacteria and Pathogens | No data | |
| Sediment Quality | No data | |
| Debris | Minimal, only a few larger pieces of inorganic debris | |
| Stream Grouping | Group 2, High value low disturbance | Nil |
| Group 3a, Urban semi-modified | 48% | |
| Group 3b, Urban modified | 30% | |
| Group 4, Concrete lined channel | 16% | |
| Group 5, Piped section | 5% | |