1. Biological Assessment
Stream Results

2. Stream #1 4 1 6 8 1 3 2

3. Determine the Percent Composition of stream #1
Name of Macroinvertebrate
Number found (Enumeration)
Percent Composition
Total Number of Organisms

4. Pollution Tolerance Index
Group 1—Very Intolerant
Group 2—Intolerant
Group 3—Tolerant
Group 4—Very Tolerant
_____ Stoneflies
_____ Mayflies
_____ Dobsonflies
_____ Dragonflies
_____ Scuds
_____ Craneflies
_____ Midges
_____ Leeches
_____ Pouch Snails
_____ Tubifex Worms
# of checks = _____ x 4
Group Score = _____
# of checks= ______ x 3
# of checks = _____ x 2
# of checks = _____ x 1
Group Score= _____
Total Score= ________
Water Quality Assessment:
≥ 23 Potentially Excellent WQ
17-22 Potentially Good WQ
11-16 Potentially Fair WQ
≤ 10 Potentially Poor WQ

5. Stream #2 23 8 3 5 14

6. Determine the Percent Composition of stream #2
Name of Macroinvertebrate
Number found (Enumeration)
Percent Composition
Total Number of Organisms

7. Pollution Tolerance Index
Group 1—Very Intolerant
Group 2—Intolerant
Group 3—Tolerant
Group 4—Very Tolerant
_____ Stoneflies
_____ Mayflies
_____ Dobsonflies
_____ Dragonflies
_____ Scuds
_____ Craneflies
_____ Midges
_____ Leeches
_____ Pouch Snails
_____ Tubifex Worms
# of checks = _____ x 4
Group Score = _____
# of checks= ______ x 3
# of checks = _____ x 2
# of checks = _____ x 1
Group Score= _____
Total Score= ________
Water Quality Assessment:
≥ 23 Potentially Excellent WQ
17-22 Potentially Good WQ
11-16 Potentially Fair WQ
≤ 10 Potentially Poor WQ