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Clemens Park - Alsea River

Macroinvertebrate data: 10-29-2015



School: Oregon State University

Date and time: Oct. 29, 2015, 10:58 a.m.

Water quality: Excellent

Number of people sorting/identifying: 4

Water type: riffle

Time spent sorting/identifying:

Weather:

Percent EPT: 51.72%

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

Sensitivity to pollution
Sensitive
Count
Caddisfly
9
Mayfly
11
Riffle beetle
4
Stonefly
10
Water penny
0
Dobsonfly
7
Sensitive total
15
Somewhat Sensitive
Count
Clam/mussel
0
Crane fly
1
Crayfish
3
Damselfly
0
Dragonfly
0
Scud
0
Fishfly
0
Alderfly
0
Mite
2
Somewhat sensitive total
6
Tolerant
Count
Aquatic worm
6
Blackfly
0
Leech
0
Midge
1
Snail
4
Mosquito larva
0
Tolerant total
3