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Cedar Creek

Macroinvertebrate data: 10-29-2015



School: Oregon State University

Date and time: Oct. 29, 2015, 10:27 a.m.

Water quality: Good

Number of people sorting/identifying: 6

Water type: riffle

Time spent sorting/identifying: 10 minutes

Weather:

Percent EPT: 66.67%

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

Sensitivity to pollution
Sensitive
Count
Caddisfly
0
Mayfly
3
Riffle beetle
5
Stonefly
15
Water penny
0
Dobsonfly
0
Sensitive total
9
Somewhat Sensitive
Count
Clam/mussel
0
Crane fly
1
Crayfish
0
Damselfly
0
Dragonfly
0
Scud
0
Fishfly
1
Alderfly
0
Mite
0
Somewhat sensitive total
4
Tolerant
Count
Aquatic worm
1
Blackfly
0
Leech
0
Midge
0
Snail
0
Mosquito larva
1
Tolerant total
2