41 Hunters Hill - West
Water Quality Ranking: 33 / 43
Data Reliability Ranking: 36 / 43
Constituent Council(s):Hunters Hill Council
Constituent stream(s):Lane Cove River (estuary)
Rainfall Station(s):R10
Sewerage Overflows: 2
Stormwater outlets: unknown
Water Quality sampling points: WQ037
Pollution Control Device Numbers: none
Overview:
Landuse:
|
Landuse |
Area (ha) |
% sub-catchment |
% LCR catchment |
|
Open space |
3 |
8 |
0.2 |
|
Residential |
22 |
62 |
0.5 |
|
Business |
0.3 |
1 |
0.2 |
|
Industrial |
0 |
0 |
0 |
|
Special Uses |
10 |
28 |
1.2 |
|
Special Zones |
0 |
0 |
0 |
|
Total |
35 |
100 |
0.4 |
Period of sampling records: 11th March 1998 % wet days: 0
Number of sampling occasions (N):1
Compliance of key indicators to ANZECC guidelines
|
Parameter |
|||||||
|
pH |
Faecal Coliforms |
% Diss. Oxygen |
Diss. Solids |
Total P |
Total N |
Ammonia |
Chl. - A |
|
83 |
17 |
17 |
75 |
25 |
58 |
57 |
0 |
Summary: Water quality in this sub-catchment cannot be suitably addressed on the basis on one dry weather Streamwatch sample. Sewage pollution and high nutrient loadings are evident.
Issues: High residential landuse and waterfront properties in this sub-catchment make the potential incidence of sewerage pollution high especially given the age of the area and associated infrastructure.
Knowledge Gaps: Only scant sewerage information is known about this sub-catchment and no details on stormwater are available.
Recommendations: An audit of stormwater and sewerage systems should be conducted. Monitoring of water quality taking pooled samples may be a way of addressing the problem of many small sub-catchments within a small area.