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Catchments
Yarra River Catchment
ME_YMR112
Site visits
06-04-2025
Merri Creek, u/s of St Georges Rd Bridge, North Fitzroy
Melbourne
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ME_YMR112 Yarra River Catchment
Sunday 6th April 2025 14:00pm
Approved
Notes
Physical Chemical Tests
Ammonium
0.09
mg/L NH4+
Dissolved Oxygen % Saturation
73.74
%
Dissolved Oxygen mg/L
7
mg/L
Electrical Conductivity
1130
µS/cm
pH
8.3
pH Units
Reactive Phosphate (mg/L)
0.06
mg/L P
Temperature - AIR
21.1
° C
Temperature - WATER
17.7
° C
Turbidity - NTU
9
NTU
Water Conditions
Weather
Overcast
Last rainfall
More than a week ago
Flow estimate
MEDIUM: flow is normal/typical average flow
Water Appearance
Clear
Stream depth
51cm - 99cm
Stream width
> 5m
Hazards
Litter/Pollutants
Water Bugs
Agreed Level Taxonomy Method
Image
Species
Score
Quantity
a. Family Hydropsychidae (net spinning caddis)
6
2
a. Family Psephenidae, Genus Sclerocyphon (water pennies)
6
8
c. Family Atyidae (glass shrimp)
3
12
c. Family Hydrobiosidae (hunter caddis)
8
1
c. Family Sphaeriidae and Family Corbiculidae (basket and pea shells)
5
2
d. Family Hymenosomatidae (five cent crab, false spider crab)
3
30
d. Family Simuliidae (black fly larvae)
5
6
e. Family Hydrobiidae - Potamopyrgus antipodarum (species - snail)
3
200
e. Family Lestidae and Family Coenagrionidae (Damselfly nymph)
1
1
g. Family Chironomidae (chironomids - True Fly larvae)
4
10
t. Family Leptoceridae, Genus Notalina (Headbanger caddis)
6
30
ALT
Signal Score
4.55
Weighted
ALT
Signal Score
4.28
Diary photos
Physical Chemical Trends
Loading chart
Test 1
Ammonia-Nitrogen
Ammonium
Dissolved Oxygen mg/L
Filterable Reactive Phosphorus
Nitrate - Nitrogen
Temperature - WATER
Temperature - AIR
pH
Electrical Conductivity
Reactive Phosphate (mg/L)
Dissolved Oxygen % Saturation
Turbidity - NTU
Test 2
Ammonia-Nitrogen
Ammonium
Dissolved Oxygen mg/L
Filterable Reactive Phosphorus
Nitrate - Nitrogen
Temperature - WATER
Temperature - AIR
pH
Electrical Conductivity
Reactive Phosphate (mg/L)
Dissolved Oxygen % Saturation
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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02-03-2025
06-04-2025
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