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Catchments
NE_THO050
Site visits
31-07-2003
Thowgla Creek (Walwa PS)
North East
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NE_THO050 Catchment
Thursday 31st July 2003 11:30am
Approved
Notes
Physical Chemical Tests
Dissolved Oxygen % Saturation
61
%
Electrical Conductivity
55
µS/cm
pH
6
pH Units
Reactive Phosphate (mg/L)
0.015
mg/L P
Temperature - WATER
8.7
° C
Turbidity - NTU
25
NTU
Water Conditions
Weather
Last rainfall
Flow estimate
Water Appearance
Stream depth
Stream width
Hazards
Litter/Pollutants
Water Bugs
WaterWatch method
Image
Species
Score
Quantity
c. Family Atyidae (glass shrimp)
0
1
Chironomids
1
15
d. Family Hydrophilidae, Genus Helochares (Beetle adult)
2
1
Water-boatmen
4
50
Caddis-fly Larvae (Trichoptera)
7
5
Mayfly nymph (Ephemeroptera)
7
3
Dragonfly Nymph (Odonata)
6
1
Freshwater Snails (Gastropoda)
3
2
Biting Midge Larvae (Diptera)
2
60
Total bug score
Total abundance
0 - 35
35+
0 - 200
Poor
Good
200+
Fair
Very good
Total abundance: 138
Total score: 25
Overall rating: Poor
Diary photos
No diary entries recorded for this visit
Physical Chemical Trends
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Test 1
Dissolved Oxygen mg/L
Temperature - WATER
pH
Electrical Conductivity
Reactive Phosphate (mg/L)
Dissolved Oxygen % Saturation
Turbidity - NTU
Test 2
Dissolved Oxygen mg/L
Temperature - WATER
pH
Electrical Conductivity
Reactive Phosphate (mg/L)
Dissolved Oxygen % Saturation
Turbidity - NTU
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