Water quality

The water quality of both dams is being monitored by ACT Parks & Conservation. 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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