24 Woodford Bay
Water Quality Ranking: 2 / 43
Data Reliability Ranking:
16 / 43Constituent Council(s):Lane Cove Council
Constituent stream(s):Woodford Bay
Rainfall Station(s):R10
Sewerage Overflows: 2
Stormwater outlets: 25
Water Quality sampling points: WQ002
Pollution Control Device Numbers: none
Overview:
Landuse:
|
Landuse |
Area (ha) |
% sub-catchment |
% LCR catchment |
|
Open space |
12 |
14 |
0.6 |
|
Residential |
73 |
86 |
1.6 |
|
Business |
0.25 |
0 |
0 |
|
Industrial |
0 |
0 |
0 |
|
Special Uses |
0 |
0 |
0 |
|
Special Zones |
0 |
0 |
0 |
|
Total |
85 |
100 |
1.0 |
Period of sampling records: December 1995 to July 1998 % wet days: 25
Number of sampling occasions (N):60
Compliance of key indicators to guidelines - % of time guidelines met under all conditions.
|
Parameter |
|||||||
|
pH |
Faecal Coliforms |
% Diss. Oxygen |
Diss. Solids |
Total P |
Total N |
Ammonia |
Chl. - A |
|
100 |
29 |
50 |
0 |
50 |
100 |
no test |
no test |
Summary: Water quality in this sub-catchment is moderate. The status of the sub-catchment is very similar to that in Gore creek, but may be moderated by the effects of tidal flushing.
Issues: As with many other sub-catchments it appears that leakages from high density residential areas combined with ageing infrastructure are becoming too much for the reticulation system. Water quality in the sub-catchment would be vastly improved if sewerage could be kept out of the waterways.
Knowledge Gaps: Information regarding this sub-catchment is largely complete but may require further information on overflow activity and exfiltration rates.
Recommendations: Obtain overflow and exfiltration activity information.