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CWA Johnson Creek Tolford Rd
Macroinvertebrate data: 11-03-2010
School: Clackamas Web Academy
Date and time: Nov. 3, 2010, 10:30 p.m.
Water quality: Poor
Number of people sorting/identifying: 3
Water type: riffle
Time spent sorting/identifying: 80 minutes
Weather:
Percent EPT: 0.00%
Note: EPT is the total number of caddisflies, mayflies, and stoneflies found divided by number of all bugs
Field notes: We found the rock snails and the mussels in little groups kind of like communites.
Sensitivity to pollution
Sensitive
Count | |
---|---|
Caddisfly![]() |
0 |
Mayfly![]() |
0 |
Riffle beetle![]() |
0 |
Stonefly![]() |
0 |
Water penny![]() |
0 |
Dobsonfly![]() |
0 |
Sensitive total |
0 |
Somewhat Sensitive
Count | |
---|---|
Clam/mussel
![]() |
463 |
Crane fly
![]() |
0 |
Crayfish
![]() |
3 |
Damselfly
![]() |
0 |
Dragonfly
![]() |
0 |
Scud
![]() |
0 |
Fishfly
![]() |
0 |
Alderfly
![]() |
0 |
Mite
![]() |
0 |
Somewhat sensitive total |
4 |
Tolerant
Count | |
---|---|
Aquatic worm
![]() |
0 |
Blackfly
![]() |
0 |
Leech
![]() |
0 |
Midge
![]() |
0 |
Snail
![]() |
291 |
Mosquito larva
![]() |
0 |
Tolerant total |
1 |