Waterwatch Data Portal
ME_YGR023 Blackburn Lake at Heron Point opposite Naughton Gve Blackburn
5 May 2019
Overview
| Catchment | Yarra River |
|---|---|
| Site | Blackburn Lake at Heron Point opposite Naughton Gve Blackburn ME_YGR023 |
| Date and Time | Sunday 5th May 2019 11:00am |
| Approved | Approved |
Physical Chemical Tests
| Ammon-Nit mg/L NH3-N | N mg/L NH4+ | D.O. % | 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 FTU | Turb NTU | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sample | 0.15 | 41.67 | 4.2 | 139 | 6.7 | 0.01 | 15 | 15 | 20 |
| Weather | overcast |
|---|---|
| Last rainfall | During the last week 0.00 |
| Flow estimate | STAGNANT: No continuous flow in channel but channel continuous (in-stream habitats connected) |
| Water Appearance | Stained brown |
| Stream depth | 1m - 2m |
| Stream width | |
| Hazards | |
| Litter/Pollutants | plastic |
Monitors: John Shortridge, Su Dempsy, Elaine Boucher, Wira Yan, Alfoncina
What has changed: Poplars on dam wall in full autumn colours, will be dropping into lake soon.
What stands out: Very clean, no debries on lake here or around verges.
Note: The sample was taken from a depth of more than 50cm, which gave unsual results for some tests. Hence, a second sample was taken (at a depth of around 30cm, as is usually done) and the results for DO, Ammonium and Phosphate tests are that of the second sample.
[Readings with the first sample were:
DO - 1.7 -> 17%
Phosphate - .03
Ammonium - very deep green - almost outside range]
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