Site visit details

Overview

Catchment Yarra River
Site Nerreman Wetland @ Eltham ME_YDI833
Date and Time Saturday 11th June 2016 09:30am
Approved Approved

Notes

Physical Chemical Tests

Ammon-Nit mg/L NH3-N N mg/L NH4+ D.O mg/L EC µS/cm FrP mg/L P Nitrate-Nit mg/L N pH pH Units rP mg/L P Air ° C Water ° C Turb NTU
Sample 8 10 10 300
Weather overcast
Last rainfall During the last week 19.4
Flow estimate LOW: Minimum flow in channel/continuous flow in some part of channel (in-stream habitats connected)
Water Appearance Muddy,Smelly,Foamy/frothy,Stained brown
Stream depth 0 - 50cm
Stream width 2m - 5m
Hazards
Litter/Pollutants bottles,cans,packets,paper,plastic,polystyrene,other
More Oxygen this time (flow had been faster.) Stream depth had been 80cm and stream width had been 5.2m. Flattened streamside vegetation. Flow was slow at first, but it rained whilst we were monitoring causing the flow to increase significantly. Water was pouring over the dam wall by the time we had finished. Turbidity was very high making it difficult to see the bugs in the sample. Other litter --- balls. In the pit drain: Polystyrene boxes, Polystyrene balls, Plastic Bottles, Balls, Pen. There was foam/froth below the dam wall. Some sand had been tipped down the side of the dam area. Still there: Small pieces of concrete. (We are clearing these bit by bit.) Litter on ledges of dam area. Weed trees growing in waterway. Birds: Rainbow Lorikeets, Pied Currawongs, Magpies, Crested Pigeons, Spotted Turtle Doves. We found 2 large tadpoles in the sample. One was very large, and with hind legs. (probably a Pobblebonk.)

Creatures Waterwatch method

Image Species Score Quantity
Dragonfly Nymph (Odonata) Dragonfly Nymph (Odonata) 6 1
Water mites (Acarina) Water mites (Acarina) 5 1
Flatworms (Turbellaria) 3 2
Freshwater Snails (Gastropoda) Freshwater Snails (Gastropoda) 3 1
Leeches (Hirudinea) Leeches (Hirudinea) 3 1
True Bugs - Backswimmers, Water-boatmen, Water-striders (Hemiptera) True Bugs - Backswimmers, Water-boatmen, Water-striders (Hemiptera) 4 1
Non Biting Midge Larvae - Bloodworms (Diptera) Non Biting Midge Larvae - Bloodworms (Diptera) 1 12
Segmented Worm (Oligochaeta) Segmented Worm (Oligochaeta) 1 10
Total bug score
Total abundance 0 - 35 35+
0 - 200 Poor Good
200+ Fair Very good
Total abundance: 29 Total score: 25 Overall rating: Poor

Diary photos

No diary entries recorded for this visit

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