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REALMS Downstream Study Site 2

Macroinvertebrate data: 11-09-2021



School: Realms (rimrock Expeditionary Alternative Learning Middle School)

Date and time: Nov. 9, 2021, 11 a.m.

Water quality: Good

Number of people sorting/identifying: 4

Water type: riffle

Time spent sorting/identifying: 30 minutes

Weather: Cold!!

Percent EPT: 83.96%

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

Sensitivity to pollution
Sensitive
Count
Caddisfly
13
Mayfly
45
Riffle beetle
1
Stonefly
31
Water penny
0
Dobsonfly
10
Sensitive total
15
Somewhat Sensitive
Count
Clam/mussel
0
Crane fly
5
Crayfish
0
Damselfly
0
Dragonfly
0
Scud
0
Fishfly
0
Alderfly
1
Mite
0
Somewhat sensitive total
4
Tolerant
Count
Aquatic worm
0
Blackfly
0
Leech
0
Midge
0
Snail
0
Mosquito larva
0
Tolerant total
0