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Wenaha River

Macroinvertebrate data: 10-05-2011



School: Enterprise High School

Date and time: Oct. 5, 2011, 2:20 p.m.

Water quality: Good

Number of people sorting/identifying: 4

Water type: riffle

Time spent sorting/identifying: 10 minutes

Weather:

Percent EPT: 76.47%

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

Sensitivity to pollution
Sensitive
Count
Caddisfly
19
Mayfly
3
Riffle beetle
0
Stonefly
4
Water penny
0
Dobsonfly
0
Sensitive total
9
Somewhat Sensitive
Count
Clam/mussel
0
Crane fly
2
Crayfish
0
Damselfly
0
Dragonfly
0
Scud
0
Fishfly
0
Alderfly
0
Mite
0
Somewhat sensitive total
2
Tolerant
Count
Aquatic worm
2
Blackfly
0
Leech
0
Midge
4
Snail
0
Mosquito larva
0
Tolerant total
2