Waterwatch Data Portal
ME_YMR190 Merri Creek @ O'Hearns Rd, Somerton
15 December 2016
Site visit details
Overview
| Catchment | Yarra River |
|---|---|
| Site | Merri Creek @ O'Hearns Rd, Somerton ME_YMR190 |
| Date and Time | Thursday 15th December 2016 11:15am |
| Approved | Approved |
Physical Chemical Tests
No physical chemical tests recorded on this visit
| 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 NTU | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sample |
| Weather | sunny |
|---|---|
| Last rainfall | |
| Flow estimate | |
| Water Appearance | Clear |
| Stream depth | |
| Stream width | |
| Hazards | |
| Litter/Pollutants |
A fine sunny day with light wind
Creatures Agreed Level Taxonomy Method
| Image | Species | Score | Quantity |
|---|---|---|---|
|
a. Family Caenidae (caenids - Mayfly nymph) | 4 | 3 |
| c. Family Atyidae (glass shrimp) | 4 | 1 | |
| c. Family Veliidae/ Family Mesoveliidae/ Family Hebridae (water treaders) | 3 | 1 | |
|
d. Family Simuliidae (black fly larvae) | 5 | 5 |
| e. Family Chironomidae, several genera (blood worms) | 1 | 25 | |
| e. Family Lestidae and Family Coenagrionidae (Damselfly nymph) | 2 | 5 | |
|
e. Phylum Turbellaria ( flatworms) | 1 | 2 |
|
f. Family Baetidae (baetids -Mayfly nymph) | 5 | 18 |
|
f. Order Amphipoda (scuds, sideswimmers) | 3 | 10 |
| g. Family Physidae, Species Physa acuta (snail) | 1 | 8 | |
| i. Family Aeshnidae (Dragonfly nymph - Couta mud eye) | 5 | 1 | |
| i. Family Dytiscidae, (two-tailed tigers) | 2 | 1 | |
| i. Family Notonectidae , Genus Anisops (slender backswimmers) | 1 | 1 | |
| j. Family Dytiscidae, (nosey tigers) | 2 | 2 | |
|
j. Family Dytiscidae, various genera (little diving beetles) | 1 | 5 |
|
l. Family Culicidae (mosquito larvae, wrigglers) | 1 | 4 |
|
p. Family Leptoceridae Unidentified, various genera (Caddis fly larvae) | 6 | 20 |
| q. Family Leptoceridae, Genus Triplectides (stick caddis) | 4 | 2 | |
| ALT Signal Score | 3.06 | ||
| Weighted ALT Signal Score | 3.41 | ||
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