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Imnaha River

Macroinvertebrate data: 10-07-2010



School: Enterprise High School

Date and time: Oct. 7, 2010, 10:50 a.m.

Water quality: Good

Number of people sorting/identifying: 4

Water type: riffle

Time spent sorting/identifying: 15 minutes

Weather:

Percent EPT: 91.67%

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

Sensitivity to pollution
Sensitive
Count
Caddisfly
70
Mayfly
10
Riffle beetle
0
Stonefly
30
Water penny
0
Dobsonfly
0
Sensitive total
9
Somewhat Sensitive
Count
Clam/mussel
0
Crane fly
3
Crayfish
0
Damselfly
0
Dragonfly
0
Scud
0
Fishfly
0
Alderfly
0
Mite
2
Somewhat sensitive total
4
Tolerant
Count
Aquatic worm
3
Blackfly
0
Leech
0
Midge
0
Snail
2
Mosquito larva
0
Tolerant total
2