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Larson Creek North of La Loma Drive with OHES
Macroinvertebrate data: 05-30-2012
School: Oregon State University
Date and time: May 30, 2012, 8:30 a.m.
Water quality: Good
Number of people sorting/identifying: 27
Water type: riffle
Time spent sorting/identifying: 45 minutes
Weather:
Percent EPT: 41.67%
Note: EPT is the total number of caddisflies, mayflies, and stoneflies found divided by number of all bugs
Field notes: StreamWise with Diana Gilley's 5th graders sample macros at their local access to Larson Creek.
Sensitivity to pollution
Sensitive
| Count | |
|---|---|
Caddisfly
|
0 |
Mayfly
|
3 |
Riffle beetle
|
0 |
Stonefly
|
2 |
Water penny
|
0 |
Dobsonfly
|
0 |
| Sensitive total |
6 |
Somewhat Sensitive
| Count | |
|---|---|
Clam/mussel
|
0 |
Crane fly
|
0 |
Crayfish
|
2 |
Damselfly
|
0 |
Dragonfly
|
0 |
Scud
|
2 |
Fishfly
|
0 |
Alderfly
|
0 |
Mite
|
0 |
|
Somewhat sensitive total |
4 |
Tolerant
| Count | |
|---|---|
Aquatic worm
|
1 |
Blackfly
|
0 |
Leech
|
0 |
Midge
|
1 |
Snail
|
1 |
Mosquito larva
|
0 |
|
Tolerant total |
3 |