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Silver Falls State Park
Macroinvertebrate data: 05-26-2022
School: Queen of Peace School
Date and time: May 26, 2022, 9:30 a.m.
Water quality: Good
Number of people sorting/identifying: 20
Water type: riffle
Time spent sorting/identifying: 120 minutes
Weather: Cloudy
Percent EPT: 88.32%
Note: EPT is the total number of caddisflies, mayflies, and stoneflies found divided by number of all bugs
Field notes: We set leaf and rock packs into the stream three weeks prior to collecting our macroinvertebrate sample.
Sensitivity to pollution
Sensitive
| Count | |
|---|---|
Caddisfly
|
61 |
Mayfly
|
119 |
Riffle beetle
|
3 |
Stonefly
|
62 |
Water penny
|
2 |
Dobsonfly
|
7 |
| Sensitive total |
18 |
Somewhat Sensitive
| Count | |
|---|---|
Clam/mussel
|
0 |
Crane fly
|
0 |
Crayfish
|
0 |
Damselfly
|
0 |
Dragonfly
|
2 |
Scud
|
0 |
Fishfly
|
0 |
Alderfly
|
0 |
Mite
|
0 |
|
Somewhat sensitive total |
2 |
Tolerant
| Count | |
|---|---|
Aquatic worm
|
17 |
Blackfly
|
0 |
Leech
|
1 |
Midge
|
0 |
Snail
|
0 |
Mosquito larva
|
0 |
|
Tolerant total |
2 |