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Macroinvertebrate data: 09-23-2014



School: Oregon State University

Date and time: Sept. 23, 2014, 11 a.m.

Water quality: Good

Number of people sorting/identifying: 5

Water type: riffle

Time spent sorting/identifying: 30 minutes

Weather:

Percent EPT: 60.00%

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

Sensitivity to pollution
Sensitive
Count
Caddisfly
2
Mayfly
3
Riffle beetle
0
Stonefly
7
Water penny
0
Dobsonfly
0
Sensitive total
9
Somewhat Sensitive
Count
Clam/mussel
0
Crane fly
1
Crayfish
1
Damselfly
0
Dragonfly
4
Scud
0
Fishfly
1
Alderfly
0
Mite
0
Somewhat sensitive total
8
Tolerant
Count
Aquatic worm
0
Blackfly
1
Leech
0
Midge
0
Snail
0
Mosquito larva
0
Tolerant total
1