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Matson Creek MWS Youth Program
Macroinvertebrate data: 11-02-2012
School: Marshfield High School
Date and time: Nov. 2, 2012, 12:30 p.m.
Water quality: Good
Number of people sorting/identifying: 2
Water type: riffle
Time spent sorting/identifying: 60 minutes
Weather:
Percent EPT: 61.54%
Note: EPT is the total number of caddisflies, mayflies, and stoneflies found divided by number of all bugs
Field notes: We also found 2 lamprey and several unidentified fish. Site 2.
Sensitivity to pollution
Sensitive
| Count | |
|---|---|
Caddisfly
|
5 |
Mayfly
|
2 |
Riffle beetle
|
0 |
Stonefly
|
1 |
Water penny
|
0 |
Dobsonfly
|
0 |
| Sensitive total |
9 |
Somewhat Sensitive
| Count | |
|---|---|
Clam/mussel
|
0 |
Crane fly
|
1 |
Crayfish
|
0 |
Damselfly
|
0 |
Dragonfly
|
0 |
Scud
|
2 |
Fishfly
|
1 |
Alderfly
|
0 |
Mite
|
0 |
|
Somewhat sensitive total |
6 |
Tolerant
| Count | |
|---|---|
Aquatic worm
|
1 |
Blackfly
|
0 |
Leech
|
0 |
Midge
|
0 |
Snail
|
0 |
Mosquito larva
|
0 |
|
Tolerant total |
1 |