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Imnaha River

Macroinvertebrate data: 10-04-2011



School: Enterprise High School

Date and time: Oct. 4, 2011, 11:34 a.m.

Water quality: Fair

Number of people sorting/identifying: 7

Water type: riffle

Time spent sorting/identifying: 10 minutes

Weather:

Percent EPT: 96.82%

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

Field notes: ONE CRAWLING BEETLE

Sensitivity to pollution
Sensitive
Count
Caddisfly
200
Mayfly
5
Riffle beetle
0
Stonefly
8
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
2
Somewhat sensitive total
4
Tolerant
Count
Aquatic worm
0
Blackfly
0
Leech
0
Midge
3
Snail
0
Mosquito larva
0
Tolerant total
1