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West Olalla Creek
Macroinvertebrate data: 04-28-2016
School: Toledo High School
Date and time: April 28, 2016, 8:49 a.m.
Water quality: Good
Number of people sorting/identifying: 2
Water type: riffle
Time spent sorting/identifying: 20 minutes
Weather:
Percent EPT: 30.77%
Note: EPT is the total number of caddisflies, mayflies, and stoneflies found divided by number of all bugs
Sensitivity to pollution
Sensitive
Count | |
---|---|
Caddisfly |
0 |
Mayfly |
3 |
Riffle beetle |
0 |
Stonefly |
5 |
Water penny |
0 |
Dobsonfly |
0 |
Sensitive total |
6 |
Somewhat Sensitive
Count | |
---|---|
Clam/mussel
|
0 |
Crane fly
|
0 |
Crayfish
|
0 |
Damselfly
|
0 |
Dragonfly
|
1 |
Scud
|
10 |
Fishfly
|
0 |
Alderfly
|
1 |
Mite
|
1 |
Somewhat sensitive total |
8 |
Tolerant
Count | |
---|---|
Aquatic worm
|
2 |
Blackfly
|
0 |
Leech
|
0 |
Midge
|
0 |
Snail
|
3 |
Mosquito larva
|
0 |
Tolerant total |
2 |