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West Olalla Creek

Macroinvertebrate data: 05-12-2016



School: Toledo High School

Date and time: May 12, 2016, 8:45 a.m.

Water quality: Fair

Number of people sorting/identifying: 2

Water type: riffle

Time spent sorting/identifying: 30 minutes

Weather:

Percent EPT: 4.55%

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
0
Riffle beetle
0
Stonefly
1
Water penny
0
Dobsonfly
0
Sensitive total
3
Somewhat Sensitive
Count
Clam/mussel
0
Crane fly
0
Crayfish
0
Damselfly
0
Dragonfly
0
Scud
15
Fishfly
0
Alderfly
0
Mite
0
Somewhat sensitive total
2
Tolerant
Count
Aquatic worm
4
Blackfly
0
Leech
0
Midge
0
Snail
2
Mosquito larva
0
Tolerant total
2