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Grande Ronde River

Macroinvertebrate data: 10-08-2014



School: Enterprise High School

Date and time: Oct. 8, 2014, 11:34 a.m.

Water quality: Excellent

Number of people sorting/identifying: 4

Water type: pool

Time spent sorting/identifying: 25 minutes

Weather:

Percent EPT: 30.49%

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

Field notes: also caught a sculpin

Sensitivity to pollution
Sensitive
Count
Caddisfly
9
Mayfly
15
Riffle beetle
0
Stonefly
1
Water penny
4
Dobsonfly
0
Sensitive total
12
Somewhat Sensitive
Count
Clam/mussel
0
Crane fly
0
Crayfish
0
Damselfly
1
Dragonfly
4
Scud
0
Fishfly
0
Alderfly
0
Mite
5
Somewhat sensitive total
6
Tolerant
Count
Aquatic worm
4
Blackfly
0
Leech
0
Midge
37
Snail
2
Mosquito larva
0
Tolerant total
3