Waterwatch Data Portal
ME_YMR190 Merri Creek @ O'Hearns Rd, Somerton
20 December 2012
Site visit details
Overview
| Catchment | Yarra River |
|---|---|
| Site | Merri Creek @ O'Hearns Rd, Somerton ME_YMR190 |
| Date and Time | Thursday 20th December 2012 10:45am |
| 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 NTU | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sample | 0 | 110 | 10.2 | 1766 | 8.24 | 0.08 | 20.6 | 19.8 | 9 |
| Weather | sunny |
|---|---|
| Last rainfall | During the last 24 hours 3 |
| Flow estimate | |
| Water Appearance | Clear |
| Stream depth | 51cm - 99cm |
| Stream width | 2m - 5m |
| Hazards | |
| Litter/Pollutants |
Creatures Agreed Level Taxonomy Method
| Image | Species | Score | Quantity |
|---|---|---|---|
|
a. Family Hydropsychidae (net spinning caddis) | 6 | 1 |
| c. Family Veliidae/ Family Mesoveliidae/ Family Hebridae (water treaders) | 3 | 6 | |
| e. Family Chironomidae, several genera (blood worms) | 1 | 10 | |
| e. Family Hydrobiidae - Potamopyrgus antipodarum (species - snail) | 1 | 4 | |
| e. Family Lestidae and Family Coenagrionidae (Damselfly nymph) | 2 | 12 | |
| f. Corduliid / libellulid like dragonflies - various families (spider mud eye) | 5 | 5 | |
|
f. Order Amphipoda (scuds, sideswimmers) | 3 | 40 |
| g. Family Chironomidae (chironomids - True Fly larvae) | 3 | 20 | |
| g. Family Physidae, Species Physa acuta (snail) | 1 | 6 | |
|
h. Family Dytiscidae, (taper-tailed tigers) | 2 | 1 |
| i. Family Aeshnidae (Dragonfly nymph - Couta mud eye) | 5 | 10 | |
| i. Family Notonectidae , Genus Anisops (slender backswimmers) | 1 | 8 | |
|
l. Family Dytiscidae, various genera (stealth diving beetles) | 1 | 1 |
| m. Family Corixidae , Genus Micronecta (little brindle boatman) | 2 | 200 | |
|
p. Family Leptoceridae Unidentified, various genera (Caddis fly larvae) | 6 | 50 |
|
t. Family Leptoceridae, Genus Notalina (Headbanger caddis) | 6 | 5 |
| ALT Signal Score | 3.25 | ||
| Weighted ALT Signal Score | 3.28 | ||
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