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Tualatin Hills Nature Park
Macroinvertebrate data: 05-02-2018
School: Health and Science School
Date and time: May 2, 2018, 9:34 a.m.
Water quality: Poor
Number of people sorting/identifying: 7
Water type: riffle
Time spent sorting/identifying: 30 minutes
Weather: cold at the end warm ish
Percent EPT: 0.00%
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 |
0 |
Riffle beetle |
2 |
Stonefly |
0 |
Water penny |
0 |
Dobsonfly |
0 |
Sensitive total |
3 |
Somewhat Sensitive
Count | |
---|---|
Clam/mussel
|
0 |
Crane fly
|
0 |
Crayfish
|
0 |
Damselfly
|
0 |
Dragonfly
|
0 |
Scud
|
1 |
Fishfly
|
0 |
Alderfly
|
0 |
Mite
|
1 |
Somewhat sensitive total |
4 |
Tolerant
Count | |
---|---|
Aquatic worm
|
0 |
Blackfly
|
0 |
Leech
|
0 |
Midge
|
0 |
Snail
|
5 |
Mosquito larva
|
0 |
Tolerant total |
1 |