EstuaryWatch Data Portal
Observation details
Overview
| Estuary | Balcombe Creek Estuary |
|---|---|
| Site | Augusta Street |
| Observation ID | #12181 |
| Date and Time | Sunday 28th January 2018 10:15am |
| Approved | Approved |
Notes
In the bottom 1 m of seawater at august St bridge hydrogen sulfide gas clearly detected. Indication of rotting vegetation, supported by very low and zero DO levels. This could indicate aftermath of high level nutrients (eg sewage spill), which needs to be investigated.
John Inchley rang Shire Health Officer, Peter O'Brien to inform him of data and he said they would investigate further (reported Mon, 29 Jan).
Jan Jones to investigate the use of drone to photograph estuary (and creek) with Balcombe Grammar.
Depth Profiling
| Depth m | Temperature °C | Salinity ppt | D.O. mg/L | D.O. % sat | EC mS/cm | Notes | |
|---|---|---|---|---|---|---|---|
| 0.1m | 26.50 | 0.50 | 9.26 | 116.8 | 0.90 | 'fresh' water | |
| Previous | 22.1 | 27.8 | 1.1 | 15.3 | 43.3 | ||
| Median | 18.1 | 22.80 | 1.90 | 21.70 | 36.2 | ||
| 0.5m | 28.10 | 16.00 | 3.51 | 48.5 | 26.28 | very brackish water | |
| Previous | 18.1 | 15.4 | 1.4 | 16.5 | 25.1 | ||
| Median | 18.1 | 22.80 | 3.12 | 38.10 | 36.2 | ||
| 1.0m | 26.70 | 23.20 | 0.11 | 1.7 | 37.00 | sea water; very low or no detectable DO; bottom sample had distinctive 'rotten egg' gas | |
| Previous | 22.1 | 30.4 | 0.5 | 7.3 | 46.7 | ||
| Median | 18.1 | 30.70 | 0.56 | 7.40 | 47.1 | ||
| 1.5m | 24.10 | 29.50 | 0.00 | 0.0 | 45.68 | DO UNDR; sea water; very low or no detectable DO; bottom sample had distinctive 'rotten egg' gas | |
| Previous | 18.1 | 27.9 | 0.3 | 3.8 | 43.2 | ||
| Median | 18.1 | 30.90 | 1.58 | 21.90 | 47.6 | ||
| 2.0m | 23.40 | 29.60 | 0.00 | 0.0 | 45.62 | DO UNDR; sea water; very low or no detectable DO; bottom sample had distinctive 'rotten egg' gas | |
| Previous | 22.0 | 30.4 | 0.4 | 5.9 | 46.7 | ||
| Median | 20.9 | 30.40 | 0.44 | 5.90 | 46.7 |
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