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South Santiam

Macroinvertebrate data: 10-26-2003



School: Abraham Lincoln Elementary

Date and time: Oct. 26, 2003, 10:05 p.m.

Water quality: Good

Number of people sorting/identifying: 40

Water type: riffle

Time spent sorting/identifying: 60 minutes

Weather: rainy

Percent EPT: 59.56%

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

Field notes: it was cool

Sensitivity to pollution
Sensitive
Count
Caddisfly
20
Mayfly
80
Riffle beetle
0
Stonefly
9
Water penny
10
Dobsonfly
0
Sensitive total
12
Somewhat Sensitive
Count
Clam/mussel
3
Crane fly
0
Crayfish
20
Damselfly
0
Dragonfly
0
Scud
0
Fishfly
0
Alderfly
0
Mite
40
Somewhat sensitive total
6
Tolerant
Count
Aquatic worm
0
Blackfly
1
Leech
0
Midge
0
Snail
0
Mosquito larva
0
Tolerant total
1