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  5. 02-01-2022

ME_DHE100 Heatherton Rd Wetland

2 January 2022

Overview Notes Phy Chem Tests Creatures Diary Photos 4
Site visit details

Overview

Catchment Dandenong
Site Heatherton Rd Wetland ME_DHE100
Date and Time Sunday 2nd January 2022 10:30am
Approved Approved

Notes

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 0 440 6.3 0 26 23.5 310
Weather cloudy
Last rainfall During the last 24 hours
Flow estimate PERMANENT: wetlands and lakes
Water Appearance Clear
Stream depth
Stream width
Hazards
Litter/Pollutants

Present: Judith, Dorothea, Peta, Julie

No flow out of the wetlands

pH 6.6 with PR, repeated with CPR giving 6.3

The sample was quite yellow, which is probably why the ammonia, phosphate and DO tests all gave 0. We did the DO test but couldn't enter it as the saturation value was "out of range". There were no visible particles in the sample, but the very high turbidity suggests very small particles were producing the colour. Pictures below show the "blank" (wetland water, on the left) and the "sample" (wetland water after chemicals added, on the right).

Salinity was high but not as high as the creek. Possibly there was no water flowing into the wetland from the creek as the creek level was very low.

Creatures Waterwatch method

Image Species Score Quantity
Aquatic Beetles - Diving Beetles, Whirligig Beetles (Coleoptera) Aquatic Beetles - Diving Beetles, Whirligig Beetles (Coleoptera) 3 6
Beetle larvae (Coleoptera) Beetle larvae (Coleoptera) 4 4
Freshwater Snails (Gastropoda) Freshwater Snails (Gastropoda) 3 30
Leeches (Hirudinea) Leeches (Hirudinea) 3 2
Total bug score
Total abundance 0 - 35 35+
0 - 200 Poor Good
200+ Fair Very good
Total abundance: 42 Total score: 13 Overall rating: Poor

Diary photos

Wetland depth was much lower than normal
DO test blank (left) and sample (right) - gave 0 result
Phosphate test blank (left) and sample (right) - slightly blue but gave 0 result
Ammonia test blank (left) and sample (right) - gave 0 result

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