Vaughans Stream Assessment
Summary of report findings
Vaughans Stream is one of the last remaining undeveloped catchments on the North Shore, with approximately 77% in rural use and 13% bush cover. Future development of the catchment is imminent and anticipated to consist of a mixture of residential, rural, open space and commercial land use. There is currently very little formal pipe infrastructure within the catchment and much of the watercourse retains remnant riparian vegetation.
Documents
Vaughans Stream report PDF 
(1.18MB)
Vaughans Stream maps (PDFs)
Links
North Shore stream assessments overview page
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| Length | 10.8km | |
| Size Of Catchment | 350ha |
|
| Vegetation Cover | 25% (88ha), generally in the upper catchment. |
|
| Imperviousness | 3.7% |
|
| District Plan Land Use | Recreation | 20% |
| Residential | <1% | |
| Residential Expansion Zone | 69% | |
| Road | 2% | |
| Rural | 8% | |
| Recreational Use | Low, no significant known public use. | |
| Receiving Environment | Long Bay Beach + Long Bay Marine Reserve. | |
| Substrate | Predominantly silt/mud. | |
| Natural Wetlands | 2 | |
| Artificial Wetlands | 1 | |
| Periphyton | Below nuisance levels | |
| Macrophytes | Good throughout except for a probable issue within a wetland in the lower main channel. | |
| Macroinvertebrates | Moderate | |
| Fish | 13 species of native fish + koura. | |
| Potential Man-Made Barriers to Fish Passage to Upstream Habitat | 5 | |
| Channel Modification | Least modified of all streams surveyed. Only modifications are within Tributaries 1 + 3. | |
| Erosion around Structures | 1 structure with severe erosion. | |
| Bank Erosion | Slight throughout catchment. | |
| Temperature | Generally low and not likely to have adverse effects on aquatic organisms. | |
| Suspended Solids, Turbidity And Visual Clarity | Low turbidity and good clarity in the headwaters. Increased turbidity and poor clarity in the lower reaches. | |
| Oxygen and Oxygen Demand | Oxygen levels suppressed in the lower section. | |
| Nutrients | No data | |
| Contaminants | No data |
|
| Bacteria and Pathogens | No data | |
| Sediment Quality | No data | |
| Debris | Little inorganic or organic debris. | |
| Stream Grouping | Group 2, High value low disturbance | 91% |
| Group 3a, Urban semi-modified | 2% | |
| Group 3b, Urban modified | 3% | |
| Group 4, Concrete lined channel | - | |
| Group 5, Piped section | 4% | |