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Catchments
Yarra River Catchment
ME_YMR112
Site visits
05-03-2023
Merri Creek, u/s of St Georges Rd Bridge, North Fitzroy
Melbourne
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ME_YMR112 Yarra River Catchment
Sunday 5th March 2023 14:00pm
Approved
Notes
Physical Chemical Tests
Ammonium
0
mg/L NH4+
Dissolved Oxygen % Saturation
118.66
%
Dissolved Oxygen mg/L
10
mg/L
Electrical Conductivity
1550
µS/cm
pH
8.2
pH Units
Reactive Phosphate (mg/L)
0.03
mg/L P
Temperature - AIR
36.5
° C
Temperature - WATER
23.7
° C
Turbidity - NTU
13
NTU
Water Conditions
Weather
Cloudy
Last rainfall
During the last week
Flow estimate
MEDIUM: flow is normal/typical average flow
Water Appearance
Muddy
Stream depth
Stream width
Hazards
Litter/Pollutants
Water Bugs
Agreed Level Taxonomy Method
Image
Species
Score
Quantity
a. Family Hydropsychidae (net spinning caddis)
6
30
c. Family Atyidae (glass shrimp)
3
4
c. Family Isostictidae (Damselfly nymph)
3
1
c. Family Sphaeriidae and Family Corbiculidae (basket and pea shells)
5
6
d. Family Hymenosomatidae (five cent crab, false spider crab)
3
4
e. Family Chironomidae, several genera (blood worms)
4
30
e. Family Hydrobiidae - Potamopyrgus antipodarum (species - snail)
3
1
f. Corduliid / libellulid like dragonflies - various families (spider mud eye)
4
1
g. Family Chironomidae (chironomids - True Fly larvae)
4
30
h. Family Notonectidae , Genus Enithares (robust backswimmers)
3
10
j. Family Dytiscidae, various genera (little diving beetles)
1
1
l. Family Corixidae , Genus Sigara (striped boatman)
4
5
l. Family Culicidae (mosquito larvae, wrigglers)
1
2
l. Family Dytiscidae, various genera (stealth diving beetles)
1
1
m. Family Corixidae , Genus Micronecta (little brindle boatman)
3
30
t. Family Leptoceridae, Genus Notalina (Headbanger caddis)
6
15
ALT
Signal Score
3.38
Weighted
ALT
Signal Score
3.95
Diary photos
No diary entries recorded for this visit
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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05-02-2023
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