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Greasy Creek

Macroinvertebrate data: 08-24-2015



School: Adams Elementary School (Corvallis)

Date and time: Aug. 24, 2015, 3:05 p.m.

Water quality: Good

Number of people sorting/identifying: 2

Water type: riffle

Time spent sorting/identifying: 15 minutes

Weather:

Percent EPT: 40.00%

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

Sensitivity to pollution
Sensitive
Count
Caddisfly
0
Mayfly
1
Riffle beetle
0
Stonefly
5
Water penny
0
Dobsonfly
1
Sensitive total
9
Somewhat Sensitive
Count
Clam/mussel
0
Crane fly
2
Crayfish
0
Damselfly
0
Dragonfly
0
Scud
0
Fishfly
0
Alderfly
1
Mite
1
Somewhat sensitive total
6
Tolerant
Count
Aquatic worm
2
Blackfly
0
Leech
0
Midge
2
Snail
0
Mosquito larva
0
Tolerant total
2