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Mill Creek
Macroinvertebrate data: 06-01-2017
School: Mcnary High School
Date and time: June 1, 2017, 8 a.m.
Water quality: Excellent
Number of people sorting/identifying: 9
Water type: pool
Time spent sorting/identifying: 30 minutes
Weather:
Percent EPT: 17.24%
Note: EPT is the total number of caddisflies, mayflies, and stoneflies found divided by number of all bugs
Field notes: 6/1/2017 Overcast skies Based on this data, water quality score is 20 (good)
Sensitivity to pollution
Sensitive
| Count | |
|---|---|
Caddisfly
|
0 |
Mayfly
|
4 |
Riffle beetle
|
0 |
Stonefly
|
1 |
Water penny
|
0 |
Dobsonfly
|
1 |
| Sensitive total |
9 |
Somewhat Sensitive
| Count | |
|---|---|
Clam/mussel
|
3 |
Crane fly
|
0 |
Crayfish
|
2 |
Damselfly
|
0 |
Dragonfly
|
0 |
Scud
|
4 |
Fishfly
|
0 |
Alderfly
|
0 |
Mite
|
8 |
|
Somewhat sensitive total |
8 |
Tolerant
| Count | |
|---|---|
Aquatic worm
|
3 |
Blackfly
|
0 |
Leech
|
0 |
Midge
|
0 |
Snail
|
2 |
Mosquito larva
|
1 |
|
Tolerant total |
3 |