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Eagle Fern Park

Macroinvertebrate data: 10-19-2015



School: Oregon State University

Date and time: Oct. 19, 2015, 11:15 a.m.

Water quality: Fair

Number of people sorting/identifying:

Water type: riffle

Time spent sorting/identifying:

Weather:

Percent EPT: 79.49%

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
60
Riffle beetle
2
Stonefly
2
Water penny
0
Dobsonfly
0
Sensitive total
9
Somewhat Sensitive
Count
Clam/mussel
0
Crane fly
0
Crayfish
0
Damselfly
0
Dragonfly
0
Scud
0
Fishfly
0
Alderfly
0
Mite
3
Somewhat sensitive total
2
Tolerant
Count
Aquatic worm
0
Blackfly
0
Leech
0
Midge
11
Snail
0
Mosquito larva
0
Tolerant total
1