EPA Region 9

Relative Extent

Relative Risk to
Macroinvertebrate
Taxa Loss (O/E)

Riparian Disturbance
Salinity
Acidification
Riparian Vegetative Cover
In-stream Fish Habitat
Streambed Sediments
Nitrogen
Phophorous

r-

0

i

5

n r

10 15 20 25 30 0

10 15 20 25

% of Stream Length Relative Risk Ratio
in Poor Condition

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