chevron_left Back to Zigzag River

Zigzag River

Macroinvertebrate data: 09-18-2015



School: Oregon State University

Date and time: Sept. 18, 2015, 10 a.m.

Water quality: Poor

Number of people sorting/identifying:

Water type: riffle

Time spent sorting/identifying:

Weather:

Percent EPT: 50.56%

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

Sensitivity to pollution
Sensitive
Count
Caddisfly
0
Mayfly
1
Riffle beetle
0
Stonefly
44
Water penny
0
Dobsonfly
0
Sensitive total
6
Somewhat Sensitive
Count
Clam/mussel
0
Crane fly
0
Crayfish
0
Damselfly
0
Dragonfly
0
Scud
0
Fishfly
4
Alderfly
0
Mite
40
Somewhat sensitive total
4
Tolerant
Count
Aquatic worm
0
Blackfly
0
Leech
0
Midge
0
Snail
0
Mosquito larva
0
Tolerant total
0