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  6. 04-01-2026

Merri Creek, u/s of St Georges Rd Bridge, North Fitzroy

Melbourne

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ME_YMR112 Yarra River Catchment

Sunday 4th January 2026 14:00pm Approved
Notes

Physical Chemical Tests

Ammonium
0mg/L NH4+
Dissolved Oxygen % Saturation
110.41%
Dissolved Oxygen mg/L
9mg/L
Electrical Conductivity
910µS/cm
pH
8.6pH Units
Reactive Phosphate (mg/L)
0.08mg/L P
Temperature - AIR
25.9° C
Temperature - WATER
25.6° C
Turbidity - NTU
9NTU

Water Conditions

Weather
Sunny
Last rainfall
More than a week ago
Flow estimate
MEDIUM: flow is normal/typical average flow
Water Appearance
Clear
Stream depth
1m - 2m
Stream width
> 5m
Hazards
 
Litter/Pollutants
 

Water Bugs Agreed Level Taxonomy Method

Image Species Score Quantity
Image
a. Family Hydropsychidae (net spinning caddis) 6 20
c. Family Atyidae (glass shrimp) c. Family Atyidae (glass shrimp) 3 5
Image
c. Family Hydrobiosidae (hunter caddis) 8 5
Image
d. Family Hymenosomatidae (five cent crab, false spider crab) 3 20
Image
d. Family Simuliidae (black fly larvae) 5 6
d. Phylum Annelida, class Oligochaeta, (worms) d. Phylum Annelida, class Oligochaeta, (worms) 2 1
e. Family Hydrobiidae - Potamopyrgus antipodarum (species - snail) e. Family Hydrobiidae - Potamopyrgus antipodarum (species - snail) 3 100
f. Corduliid / libellulid like dragonflies - various families (spider mud eye) f. Corduliid / libellulid like dragonflies - various families (spider mud eye) 4 1
Image
f. Order Amphipoda (scuds, sideswimmers) 3 2
g. Family Chironomidae (chironomids - True Fly larvae) g. Family Chironomidae (chironomids - True Fly larvae) 4 10
m. Family Corixidae , Genus Micronecta (little brindle boatman) m. Family Corixidae , Genus Micronecta (little brindle boatman) 3 1
q. Family Leptoceridae, Genus Triplectides (stick caddis) q. Family Leptoceridae, Genus Triplectides (stick caddis) 3 1
Image
t. Family Leptoceridae, Genus Notalina (Headbanger caddis) 6 100
ALT Signal Score 4.08
Weighted ALT Signal Score 4.39

Diary photos

Physical Chemical Trends

Last data:
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