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  6. 31-03-2024

Merri Creek, near footbridge 57 Connolly Ave, Coburg (opp De Chene Reserve)

Melbourne

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ME_YMR141 Yarra River Catchment

Sunday 31st March 2024 13:30pm Approved
Notes

Physical Chemical Tests

Ammonium
0.02mg/L NH4+
Dissolved Oxygen % Saturation
90.26%
Dissolved Oxygen mg/L
8mg/L
Electrical Conductivity
4200µS/cm
pH
8.5pH Units
Reactive Phosphate (mg/L)
0.06mg/L P
Temperature - AIR
21.8° C
Temperature - WATER
20.8° 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
51cm - 99cm
Stream width
> 5m
Hazards
 
Litter/Pollutants
 

Water Bugs Agreed Level Taxonomy Method

Image Species Score Quantity
Image
a. Family Hydropsychidae (net spinning caddis) 6 30
b. Family Ecnomidae, Genus Ecnomus (bandit caddis) b. Family Ecnomidae, Genus Ecnomus (bandit caddis) 6 5
c. Family Atyidae (glass shrimp) c. Family Atyidae (glass shrimp) 3 30
c. Family Sphaeriidae and Family Corbiculidae (basket and pea shells) c. Family Sphaeriidae and Family Corbiculidae (basket and pea shells) 5 10
c. Family Veliidae/ Family Mesoveliidae/ Family Hebridae (water treaders) c. Family Veliidae/ Family Mesoveliidae/ Family Hebridae (water treaders) 1 4
Image
d. Family Simuliidae (black fly larvae) 5 20
e. Family Chironomidae, several genera (blood worms) e. Family Chironomidae, several genera (blood worms) 4 8
e. Family Lestidae and Family Coenagrionidae (Damselfly nymph) e. Family Lestidae and Family Coenagrionidae (Damselfly nymph) 1 5
Image
f. Order Amphipoda (scuds, sideswimmers) 3 10
g. Family Chironomidae (chironomids - True Fly larvae) g. Family Chironomidae (chironomids - True Fly larvae) 4 5
g. Family Physidae, Species Physa acuta (snail) g. Family Physidae, Species Physa acuta (snail) 2 4
h. Family Notonectidae , Genus Enithares (robust backswimmers) h. Family Notonectidae , Genus Enithares (robust backswimmers) 3 10
m. Family Corixidae , Genus Micronecta (little brindle boatman) m. Family Corixidae , Genus Micronecta (little brindle boatman) 3 30
q. Family Leptoceridae, Genus Triplectides (stick caddis) q. Family Leptoceridae, Genus Triplectides (stick caddis) 3 2
Image
t. Family Leptoceridae, Genus Notalina (Headbanger caddis) 6 2
ALT Signal Score 3.67
Weighted ALT Signal Score 3.77

Diary photos

Physical Chemical Trends

Last data:
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