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Bear Creek at WWCLC

Macroinvertebrate data: 02-28-2013



School: Oregon State University

Date and time: Feb. 28, 2013, 10:23 a.m.

Water quality: Good

Number of people sorting/identifying: 16

Water type: riffle

Time spent sorting/identifying: 50 minutes

Weather:

Percent EPT: 61.11%

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

Field notes: Andy Strange's 7th grade Class, Salmon Watch

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