2. Why Assess Biological Water Quality? Role in government decision making Role in government decision making Decide which areas need help first Decide which areas need help first Provide baseline data Provide baseline data Gauge effect of changes to watershed Gauge effect of changes to watershed

4. Biological Monitoring Biological monitoring involves collecting, identifying and counting macroinvertebrates Biological monitoring involves collecting, identifying and counting macroinvertebrates The purpose of biological monitoring is to quickly assess both water and habitat quality The purpose of biological monitoring is to quickly assess both water and habitat quality Healthy streams are characterized by abundant and diverse macroinvertebrate populations Monitoring involves quarterly sampling by volunteers Healthy streams are characterized by abundant and diverse macroinvertebrate populations Monitoring involves quarterly sampling by volunteers

5. Macros are aquatic insects, mollusks and crustaceans Macros are aquatic insects, mollusks and crustaceans Macros live in various stream habitats and derive their oxygen from the water Macros live in various stream habitats and derive their oxygen from the water These organisms are impacted by all the stresses that occur in a stream environment, both man-made and naturally occurring These organisms are impacted by all the stresses that occur in a stream environment, both man-made and naturally occurring What are Macroinvertebrates

6. Macros as Indicators of Water Quality Not very mobile Not very mobile Present during ALL stream events (though recent heavy rains can affect results) Present during ALL stream events (though recent heavy rains can affect results) Relatively easy to catch, view and identify Relatively easy to catch, view and identify They are affected by the physical, chemical and biological conditions of the stream They are affected by the physical, chemical and biological conditions of the stream Their absence provides early warning signal Their absence provides early warning signal

7. Water Penny

8. Aquatic Sowbug

10. Rat-tailed maggot

13. Right-handed snail or gill snail

20. Leech

24. Blood Midge Larva

25. Planaria

27. Freshwater mussels

29. A

30. B

31. C

32. D

33. E

34. F

35. G

36. H

37. I

38. J