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Grande Ronde River

Macroinvertebrate data: 10-05-2010



School: Enterprise High School

Date and time: Oct. 5, 2010, 10:05 a.m.

Water quality: Good

Number of people sorting/identifying: 5

Water type: riffle

Time spent sorting/identifying: 10 minutes

Weather:

Percent EPT: 38.00%

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

Field notes: we collected two samples

Sensitivity to pollution
Sensitive
Count
Caddisfly
5
Mayfly
6
Riffle beetle
0
Stonefly
8
Water penny
4
Dobsonfly
0
Sensitive total
12
Somewhat Sensitive
Count
Clam/mussel
0
Crane fly
0
Crayfish
0
Damselfly
0
Dragonfly
0
Scud
0
Fishfly
0
Alderfly
0
Mite
0
Somewhat sensitive total
0
Tolerant
Count
Aquatic worm
20
Blackfly
0
Leech
0
Midge
0
Snail
7
Mosquito larva
0
Tolerant total
2