By this chart you see that we have 1caddisfly larva 5 stonefly larva 5 mayfly nymph 2 dobsonfly in the non-tolerant section. There is 1 beetle larva and 3 dragon fly larva in the somewhat tolerant section. In the tolerant group there is 2 aquatic worm and 1 leech. That means this part of the creek is clean.
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