chevron_left Back to Grande Ronde River
Grande Ronde River
Macroinvertebrate data: 09-28-2016
School: Enterprise High School
Date and time: Sept. 28, 2016, 11 a.m.
Water quality: Excellent
Number of people sorting/identifying: 6
Water type: pool
Time spent sorting/identifying: 20 minutes
Weather:
Percent EPT: 6.11%
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
|
5 |
Riffle beetle
|
2 |
Stonefly
|
0 |
Water penny
|
6 |
Dobsonfly
|
0 |
| Sensitive total |
12 |
Somewhat Sensitive
| Count | |
|---|---|
Clam/mussel
|
0 |
Crane fly
|
0 |
Crayfish
|
0 |
Damselfly
|
0 |
Dragonfly
|
0 |
Scud
|
1 |
Fishfly
|
1 |
Alderfly
|
0 |
Mite
|
0 |
|
Somewhat sensitive total |
4 |
Tolerant
| Count | |
|---|---|
Aquatic worm
|
50 |
Blackfly
|
0 |
Leech
|
0 |
Midge
|
60 |
Snail
|
3 |
Mosquito larva
|
0 |
|
Tolerant total |
3 |