Site visit details

Overview

Catchment Yarra River
Site Nerreman Wetland @ Eltham ME_YDI833
Date and Time Saturday 26th April 2014 09:25am
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 0.4 3 300 6.8 0.15 19.8 15 10
Weather overcast
Last rainfall During the last week 8
Flow estimate LOW: Minimum flow in channel/continuous flow in some part of channel (in-stream habitats connected)
Water Appearance Scummy
Stream depth 51cm - 99cm
Stream width >5m
Hazards
Litter/Pollutants bottles,cans,packets,paper,plastic,polystyrene,other
High Ammonium and Phosphate. Sample needed to be warmed for these tests. Other pollutants at the site were: balls, cigarette butts and drinking straws. Pollutants in the pit drain were: bottles, cans, balls, polystyrene, scum --- and an oily smell. Vegetation growing on the dam wall. Cumbungi in seed. A small branch resting at the top of the dam wall. A dead tadpole --- a large one --- in the bug sample. When I visited the site later in the day to return the bug sample, I noticed that the flow had returned to normal and that the water below the dam wall was foamy. One mm of rain had fallen since the completion of the tests. Weeds have spread across the creek downstream from the tunnels under the road. BIRDS: Pied Currawongs, Rainbow Lorikeets, Crested Pigeons, Magpies, Corellas, Noisy Miners, Pacific Black Ducks.

Creatures Waterwatch method

Image Species Score Quantity
Damselfly Nymph (Odonata) Damselfly Nymph (Odonata) 6 2
Water mites (Acarina) Water mites (Acarina) 5 1
Flatworms (Turbellaria) 3 3
Leeches (Hirudinea) Leeches (Hirudinea) 3 3
True Bugs - Backswimmers, Water-boatmen, Water-striders (Hemiptera) True Bugs - Backswimmers, Water-boatmen, Water-striders (Hemiptera) 4 12
Mosquito Larvae (Diptera) Mosquito Larvae (Diptera) 2 4
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: 47 Total score: 24 Overall rating: Poor

Diary photos

No diary entries recorded for this visit

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