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Catchments
Yarra River Catchment
ME_YMR112
Site visits
02-03-2025
Merri Creek, u/s of St Georges Rd Bridge, North Fitzroy
Melbourne
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ME_YMR112 Yarra River Catchment
Sunday 2nd March 2025 14:00pm
Approved
Notes
Physical Chemical Tests
Ammonium
0
mg/L NH4+
Dissolved Oxygen % Saturation
57.63
%
Dissolved Oxygen mg/L
5
mg/L
Electrical Conductivity
660
µS/cm
pH
8
pH Units
Reactive Phosphate (mg/L)
0.1
mg/L P
Temperature - AIR
22
° C
Temperature - WATER
22.3
° C
Turbidity - NTU
9
NTU
Water Conditions
Weather
Overcast
Last rainfall
During the last 24 hours
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
50
a. Family Psephenidae, Genus Sclerocyphon (water pennies)
6
6
c. Family Atyidae (glass shrimp)
3
20
c. Family Hydrobiosidae (hunter caddis)
8
3
c. Family Sphaeriidae and Family Corbiculidae (basket and pea shells)
5
6
c. Family Veliidae/ Family Mesoveliidae/ Family Hebridae (water treaders)
1
1
c. Phylum Annelida, class Hirudinea, (leeches)
1
2
d. Family Hymenosomatidae (five cent crab, false spider crab)
3
6
d. Family Simuliidae (black fly larvae)
5
10
e. Family Chironomidae, several genera (blood worms)
4
6
e. Family Hydrobiidae - Potamopyrgus antipodarum (species - snail)
3
100
e. Family Nepidae, Genus Ranatra (slender water scorpions/stick bug)
2
1
g. Family Chironomidae (chironomids - True Fly larvae)
4
100
p. Family Leptoceridae Unidentified, various genera (Caddis fly larvae)
6
1
t. Family Leptoceridae, Genus Notalina (Headbanger caddis)
6
100
ALT
Signal Score
4.20
Weighted
ALT
Signal Score
4.49
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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05-01-2025
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