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Macroinvertebrate data: 09-26-2014



School: Oregon State University

Date and time: Sept. 26, 2014, noon

Water quality: Fair

Number of people sorting/identifying: 17

Water type: riffle

Time spent sorting/identifying: 10 minutes

Weather:

Percent EPT: 85.71%

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

Sensitivity to pollution
Sensitive
Count
Caddisfly
14
Mayfly
18
Riffle beetle
0
Stonefly
10
Water penny
0
Dobsonfly
0
Sensitive total
9
Somewhat Sensitive
Count
Clam/mussel
0
Crane fly
0
Crayfish
2
Damselfly
0
Dragonfly
2
Scud
0
Fishfly
0
Alderfly
0
Mite
0
Somewhat sensitive total
4
Tolerant
Count
Aquatic worm
0
Blackfly
0
Leech
0
Midge
0
Snail
3
Mosquito larva
0
Tolerant total
1