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Lotus Isle Cove

Macroinvertebrate data: 08-20-2010



School: Black Butte Elementary School

Date and time: Aug. 20, 2010, midnight

Water quality: Excellent

Number of people sorting/identifying: 3

Water type: riffle

Time spent sorting/identifying: 30 minutes

Weather:

Percent EPT: 6.54%

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

Sensitivity to pollution
Sensitive
Count
Caddisfly
6
Mayfly
0
Riffle beetle
2
Stonefly
4
Water penny
1
Dobsonfly
3
Sensitive total
15
Somewhat Sensitive
Count
Clam/mussel
30
Crane fly
1
Crayfish
0
Damselfly
0
Dragonfly
3
Scud
0
Fishfly
6
Alderfly
0
Mite
0
Somewhat sensitive total
8
Tolerant
Count
Aquatic worm
0
Blackfly
7
Leech
0
Midge
0
Snail
40
Mosquito larva
50
Tolerant total
3