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How Do We Measure Water Quality????

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

1 How Do We Measure Water Quality????

2 Water Quality Chemical Characteristics Biological Characteristics
Physical Characteristics

3 Chemical Characteristics
Dissolved Oxygen Nitrogen Phosphorous pH Alkalinity

4 Dissolved Oxygen

5 Dissolved Oxygen

6 Fish Kill

7 pH

8 Acid Rain



11 Alkalinity

12 Nitrogen and Phosphorous

13 Eutrophication

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

15 Biological Characteristics
Fish Algae Rooted Aquatic Plants Bacteria 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 Stoneflies Caddisflies

22 Physical Characteristics
Temperature Local Land Use Activities Stream Bank Erosion Stream Bottom 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 Measuring Stream Flow Width X Depth X Feet per Second = Cubic Feet per Second (cfs)

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

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