Skip to content
WaterWatch Data Portal
Volunteer Login
Find My Waterway
Catchments
Yarra River Catchment
ME_YMR190
Site visits
17-04-2013
Merri Creek @ O'Hearns Rd, Somerton
Melbourne
DOWNLOAD DATA
ME_YMR190 Yarra River Catchment
Wednesday 17th April 2013 11:00am
Approved
Notes
Physical Chemical Tests
Ammonium
0
mg/L NH4+
Dissolved Oxygen % Saturation
108
%
Dissolved Oxygen mg/L
11.14
mg/L
Electrical Conductivity
1116
µS/cm
pH
8.39
pH Units
Reactive Phosphate (mg/L)
0.07
mg/L P
Temperature - AIR
21
° C
Temperature - WATER
14.6
° C
Turbidity - NTU
9
NTU
Water Conditions
Weather
Cloudy
Last rainfall
During the last week
Flow estimate
HIGH: Less than bankfull and in-stream habitats connected
Water Appearance
Stream depth
51cm - 99cm
Stream width
2m - 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
3
c. Family Atyidae (glass shrimp)
4
20
c. Family Sphaeriidae and Family Corbiculidae (basket and pea shells)
4
2
c. Family Veliidae/ Family Mesoveliidae/ Family Hebridae (water treaders)
3
2
d. Family Simuliidae (black fly larvae)
5
100
e. Family Chironomidae, several genera (blood worms)
1
5
e. Family Lestidae and Family Coenagrionidae (Damselfly nymph)
2
20
e. Phylum Turbellaria ( flatworms)
1
1
f. Corduliid / libellulid like dragonflies - various families (spider mud eye)
5
5
f. Order Amphipoda (scuds, sideswimmers)
3
100
g. Family Chironomidae (chironomids - True Fly larvae)
3
20
g. Family Physidae, Species Physa acuta (snail)
1
20
h. Family Notonectidae , Genus Enithares (robust backswimmers)
1
10
h. Family Planorbidae, various genera (planorbids - snails)
2
2
i. Family Aeshnidae (Dragonfly nymph - Couta mud eye)
5
1
i. Family Dytiscidae, (two-tailed tigers)
2
1
k. Family Dytiscidae, various genera (mixed diving beetles)
1
2
m. Family Corixidae , Genus Micronecta (little brindle boatman)
2
100
q. Family Leptoceridae, Genus Triplectides (stick caddis)
4
20
t. Family Leptoceridae, Genus Notalina (Headbanger caddis)
6
3
ALT
Signal Score
3.57
Weighted
ALT
Signal Score
3.59
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:
←
07-03-2013
17-04-2013
15-12-2016
→
Modal title