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West Olalla Creek
Macroinvertebrate data: 05-09-2017
School: Toledo High School
Date and time: May 9, 2017, 9 a.m.
Water quality: Excellent
Number of people sorting/identifying: 2
Water type: riffle
Time spent sorting/identifying: 20 minutes
Weather:
Percent EPT: 19.05%
Note: EPT is the total number of caddisflies, mayflies, and stoneflies found divided by number of all bugs
Sensitivity to pollution
Sensitive
| Count | |
|---|---|
Caddisfly
|
2 |
Mayfly
|
1 |
Riffle beetle
|
0 |
Stonefly
|
1 |
Water penny
|
0 |
Dobsonfly
|
0 |
| Sensitive total |
9 |
Somewhat Sensitive
| Count | |
|---|---|
Clam/mussel
|
0 |
Crane fly
|
0 |
Crayfish
|
0 |
Damselfly
|
0 |
Dragonfly
|
1 |
Scud
|
3 |
Fishfly
|
0 |
Alderfly
|
0 |
Mite
|
1 |
|
Somewhat sensitive total |
6 |
Tolerant
| Count | |
|---|---|
Aquatic worm
|
1 |
Blackfly
|
1 |
Leech
|
0 |
Midge
|
6 |
Snail
|
4 |
Mosquito larva
|
0 |
|
Tolerant total |
4 |