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Packsaddle County Park

Macroinvertebrate data: 09-15-2021



School: Silvies River Charter School

Date and time: Sept. 15, 2021, 12:15 p.m.

Water quality: Excellent

Number of people sorting/identifying: 14

Water type: pool

Time spent sorting/identifying: 160 minutes

Weather: sunny / cloudy

Percent EPT: 42.11%

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

Sensitivity to pollution
Sensitive
Count
Caddisfly
6
Mayfly
6
Riffle beetle
1
Stonefly
4
Water penny
0
Dobsonfly
1
Sensitive total
15
Somewhat Sensitive
Count
Clam/mussel
0
Crane fly
0
Crayfish
0
Damselfly
0
Dragonfly
0
Scud
0
Fishfly
1
Alderfly
2
Mite
10
Somewhat sensitive total
6
Tolerant
Count
Aquatic worm
1
Blackfly
0
Leech
0
Midge
0
Snail
5
Mosquito larva
1
Tolerant total
3