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  6. 07-02-2010

Yarrowee River at Junction Bridge, Mt Mercer

Corangamite

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CO_YAR240 Barwon River Catchment

Sunday 7th February 2010 11:00am Approved
Notes

Physical Chemical Tests

Dissolved Oxygen % Saturation
40%
Dissolved Oxygen mg/L
3.5mg/L
Electrical Conductivity
1780µS/cm
pH
8pH Units
Reactive Phosphate (mg/L)
0.6ppm
Temperature - AIR
21° C
Temperature - WATER
17° C
Turbidity - NTU
10NTU

Water Conditions

Weather
Sunny
Last rainfall
During the last week
Flow estimate
MEDIUM: flow is normal/typical average flow
Water Appearance
Clear
Stream depth
1m - 2m
Stream width
>5m
Hazards
 
Litter/Pollutants

Habitat

Bank Erosion Stability Bank Vegetation In Stream Cover Riffles Pools Bends Verge Vegetation Overall
Excellent 5 Fair 6 Good 8 Excellent 5 Good 8 Good 32

Water Bugs WaterWatch method

Image Species Score Quantity
Image
Caddis-fly Larvae (Trichoptera) 7 34
Image
Mayfly nymph (Ephemeroptera) 7 1
Image
Stonefly nymph (Plecoptera) 8 2
Image
Damselfly Nymph (Odonata) 6 1
Flatworms (Turbellaria) Flatworms (Turbellaria) 3 15
Image
Freshwater Snails (Gastropoda) 3 10
Image
True Bugs - Backswimmers, Water-boatmen, Water-striders (Hemiptera) 4 70
Image
Non Biting Midge Larvae - Bloodworms (Diptera) 1 35
Total bug score
Total abundance 0 - 35 35+
0 - 200 Poor Good
200+ Fair Very good
Total abundance: 168 Total score: 38 Overall rating: Good

Diary photos

No diary entries recorded for this visit

Physical Chemical Trends

Last data:
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