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Water Quality How Do We Measure Water Quality????.

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Presentation on theme: "Water Quality How Do We Measure Water Quality????."— Presentation transcript:

1 Water Quality How Do We Measure Water Quality????

2 Water Quality Chemical Characteristics Chemical Characteristics Biological Characteristics Biological Characteristics Physical Characteristics Physical Characteristics

3 Chemical Characteristics Dissolved Oxygen Dissolved Oxygen Nitrogen Nitrogen Phosphorous Phosphorous pH pH Alkalinity Alkalinity

4 Dissolved Oxygen

5

6 Fish Kill

7 pH

8 Acid Rain

9

10

11 Alkalinity

12 Nitrogen and Phosphorous

13 Eutrophication

14 Good Water Quality Dissolved Oxygen: >6 ppm Dissolved Oxygen: >6 ppm pH: Neutral pH: Neutral Alkalinity: 100 – 200 ppm Alkalinity: 100 – 200 ppm Nitrogen and Phosphorous: <.1 ppm Nitrogen and Phosphorous: <.1 ppm

15 Biological Characteristics Fish Fish Algae Algae Rooted Aquatic Plants Rooted Aquatic Plants Bacteria Bacteria Benthic Macroinvertebrates Benthic Macroinvertebrates

16 Benthic Macroinvertebrates Think Small!!!!!

17 Benthic Macroinvertebrate Sampling

18 Stonefly Larvae

19 Mayfly Larvae

20 Caddisfly Larvae

21 Benthic Macroinvertebrates as Water Quality Indicators Mayflies Mayflies Stoneflies Stoneflies Caddisflies Caddisflies

22 Physical Characteristics Temperature Temperature Local Land Use Activities Local Land Use Activities Stream Bank Erosion Stream Bank Erosion Stream Bottom Stream Bottom Flow Flow

23 Different Types of Fish Do Better in Different Water Temperatures

24 Warm Water Fish Blue Gills

25 Stream Bank Erosion

26 Stream Bottom Characteristics

27 Measuring Stream Flow

28 Width X Depth X Feet per Second = Cubic Feet per Second (cfs) Width X Depth X Feet per Second = Cubic Feet per Second (cfs)

29 Watershed Scientists What Do We Do? Take Water Quality Measurements Take Water Quality Measurements Sample for Macroinvertebrates Sample for Macroinvertebrates Take Water Temperature Take Water Temperature Figure Out the Stream Flow Figure Out the Stream Flow Look for Signs of Pollutants Look for Signs of Pollutants What Do All of These Say About Water Quality? What Do All of These Say About Water Quality?


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