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Macroinvertebrate data: 10-17-2015



School: Oregon State University

Date and time: Oct. 17, 2015, 10:47 a.m.

Water quality: Excellent

Number of people sorting/identifying: 13

Water type: riffle

Time spent sorting/identifying: 45 minutes

Weather:

Percent EPT: 21.43%

Note: EPT is the total number of caddisflies, mayflies, and stoneflies found divided by number of all bugs

Sensitivity to pollution
Sensitive
Count
Caddisfly
3
Mayfly
3
Riffle beetle
3
Stonefly
3
Water penny
3
Dobsonfly
3
Sensitive total
18
Somewhat Sensitive
Count
Clam/mussel
2
Crane fly
2
Crayfish
2
Damselfly
2
Dragonfly
2
Scud
2
Fishfly
2
Alderfly
2
Mite
2
Somewhat sensitive total
18
Tolerant
Count
Aquatic worm
1
Blackfly
1
Leech
1
Midge
1
Snail
1
Mosquito larva
1
Tolerant total
6