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Catchments
Yarra River Catchment
ME_YVA100
Site visits
25-01-2026
Valley Creek, Mt Waverley, east of Regent Street, near the confluence of Scotchman's Creek
Melbourne
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ME_YVA100 Yarra River Catchment
Sunday 25th January 2026 11:00am
Approved
Notes
Physical Chemical Tests
Ammonium
0
mg/L NH4+
Dissolved Oxygen % Saturation
49.71
%
Dissolved Oxygen mg/L
4.7
mg/L
Electrical Conductivity
406
µS/cm
pH
6.9
pH Units
Reactive Phosphate (mg/L)
0.042
mg/L P
Temperature - AIR
20
° C
Temperature - WATER
18
° C
Turbidity - FTU
36
FTU
Water Conditions
Weather
Overcast
Last rainfall
During the last week
1.00
Flow estimate
LOW: Minimum flow in channel/continuous flow in some part of channel (in-stream habitats connected)
Water Appearance
Clear,Other
Stream depth
0 - 50cm
Stream width
< 2m
Hazards
Litter/Pollutants
plastic
Water Bugs
WaterWatch method
Image
Species
Score
Quantity
Damselfly Nymph (Odonata)
6
30
Dragonfly Nymph (Odonata)
6
1
Yabbies/Marron/Gilgie Freshwater (Decapoda)
5
1
Flatworms (Turbellaria)
2
5
Freshwater Snails (Gastropoda)
3
30
Leeches (Hirudinea)
3
11
Fly Larvae -True, Black, Crane, March, Horse, and Soldier Fly Larvae (Diptera)
2
2
Mosquito Larvae (Diptera)
2
20
Non Biting Midge Larvae - Bloodworms (Diptera)
1
5
Segmented Worm (Oligochaeta)
1
5
Total bug score
Total abundance
0 - 35
35+
0 - 200
Poor
Good
200+
Fair
Very good
Total abundance: 110
Total score: 31
Overall rating: Poor
Diary photos
Physical Chemical Trends
Loading chart
Test 1
Ammonium
Dissolved Oxygen mg/L
Temperature - WATER
Temperature - AIR
pH
Electrical Conductivity
Reactive Phosphate (mg/L)
Dissolved Oxygen % Saturation
Turbidity - FTU
Turbidity - NTU
Test 2
Ammonium
Dissolved Oxygen mg/L
Temperature - WATER
Temperature - AIR
pH
Electrical Conductivity
Reactive Phosphate (mg/L)
Dissolved Oxygen % Saturation
Turbidity - FTU
Turbidity - NTU
Mininum standard
Any level
Level 1
Level 2
Level 3
Level 4
Start date
First data:
End date
Last data:
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23-11-2025
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