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Matson Creek MWS Youth Program

Macroinvertebrate data: 11-02-2012



School: Marshall High School

Date and time: Nov. 2, 2012, noon

Water quality: Fair

Number of people sorting/identifying: 4

Water type: riffle

Time spent sorting/identifying: 45 minutes

Weather:

Percent EPT: 7.69%

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

Sensitivity to pollution
Sensitive
Count
Caddisfly
3
Mayfly
0
Riffle beetle
0
Stonefly
0
Water penny
0
Dobsonfly
0
Sensitive total
3
Somewhat Sensitive
Count
Clam/mussel
0
Crane fly
0
Crayfish
0
Damselfly
0
Dragonfly
0
Scud
14
Fishfly
1
Alderfly
0
Mite
5
Somewhat sensitive total
6
Tolerant
Count
Aquatic worm
0
Blackfly
0
Leech
0
Midge
0
Snail
16
Mosquito larva
0
Tolerant total
1