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Ashland Creek below Ashland Treatment Plant

Macroinvertebrate data: 04-12-2012



School: Oregon State University

Date and time: April 12, 2012, 10 a.m.

Water quality: Good

Number of people sorting/identifying: 7

Water type: riffle

Time spent sorting/identifying: 40 minutes

Weather:

Percent EPT: 86.49%

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

Field notes: Part of a watershed study with John Muir Middle School Students. Students sampled water quality metrics at the top of the Ashland Watershed near the Lower Reservoir. Data collected with RVCOG and Lomakatsi partnership.

Sensitivity to pollution
Sensitive
Count
Caddisfly
4
Mayfly
25
Riffle beetle
1
Stonefly
3
Water penny
0
Dobsonfly
0
Sensitive total
12
Somewhat Sensitive
Count
Clam/mussel
0
Crane fly
0
Crayfish
0
Damselfly
0
Dragonfly
0
Scud
2
Fishfly
0
Alderfly
0
Mite
0
Somewhat sensitive total
2
Tolerant
Count
Aquatic worm
1
Blackfly
0
Leech
0
Midge
1
Snail
0
Mosquito larva
0
Tolerant total
2