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  6. 02-02-2020

Blackburn Lake at Heron Point opposite Naughton Gve Blackburn

Melbourne

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ME_YGR023 Yarra River Catchment

Sunday 2nd February 2020 10:40am Approved
Notes

Physical Chemical Tests

Ammonium
0mg/L NH4+
Dissolved Oxygen % Saturation
3.43%
Dissolved Oxygen mg/L
0.3mg/L
Electrical Conductivity
114µS/cm
pH
7pH Units
Reactive Phosphate (mg/L)
0.023mg/L P
Temperature - AIR
16° C
Temperature - WATER
22° C
Turbidity - FTU
34FTU

Water Conditions

Weather
Sunny
Last rainfall
During the last 24 hours 25.00
Flow estimate
STAGNANT: No continuous flow in channel but channel continuous (in-stream habitats connected)
Water Appearance
Muddy
Stream depth
1m - 2m
Stream width
 
Hazards
 
Litter/Pollutants
bottles

Water Bugs WaterWatch method

Image Species Score Quantity
Image
Caddis-fly Larvae (Trichoptera) 7 1
Image
Mayfly nymph (Ephemeroptera) 7 1
Image
Damselfly Nymph (Odonata) 6 2
Image
Freshwater Shrimp/Prawn (Atyidae) 5 20
Image
Yabbies/Marron/Gilgie Freshwater (Decapoda) 5 3
Image
True Bugs - Backswimmers, Water-boatmen, Water-striders (Hemiptera) 4 30
Total bug score
Total abundance 0 - 35 35+
0 - 200 Poor Good
200+ Fair Very good
Total abundance: 57 Total score: 34 Overall rating: Poor

Diary photos

Water level high following steady rainfall for last 3 days (25mm)

Physical Chemical Trends

Last data:
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