Water quality

The water quality of both dams is being monitored. Monthly data will be collected over the 18 months of the project to measure how revegetation of the dams affects the water quality.

Upper Dam

Date 07/09/05 13/10/05
Time 13:20 09:20
Air Temp (deg C) 18 17
Water temp (deg C) 16 16
Dissolved Oxygen (DO) 11.8 9.8
DO % Saturation 140 98
Orthophosphates (mg/L) 0.02 0.05
pH 8.2 9.5
Turbidity (NTU) 35 35
Electrical Conductivity 68 74

Lower Dam

Date 07/09/05 13/10/05
Time 13:45 09:45
Air Temp (deg C) 18 24
Water temp (deg C) 17.5 21
Dissolved Oxygen (DO) over range 7.6
DO % Saturation over range 70
Orthophosphates (mg/L) 0.00 0.03
pH 7.6 9.5
Turbidity (NTU) 30 32
Electrical Conductivity 81 77

Conditions

07/09/05 Clear, sunny, warm, slight wind. Both dams at full capacity.
13/10/05 After dam levels dropped by ~1m in preparation for planting.
Clear, sunny, very light breeze.
Upper dam – water visibility poor, clarity is approx 25cm from bank.
Lower dam – slime algae present in small patches near edge, not filamentous.
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