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Daily Review #3 10. How do rivers and streams form? 11. Define watershed, delta, ox bow lake, floodplain, tributary and divide 12. Why is Colorado considered a headwater state? 13. When it rains in Parker, where does the water eventually end up? 14. If you live in a city, how does water end up in your faucet and what happens to it when it leaves your house? End

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Drought Lack of significant rainfall Due to less precipitation Years Impacts Crops and livestock Groundwater Increased desertification Economy Locations Sahara Australia U.S. (2012, 1920s, 1988) California

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Colorado Water 4 major watersheds Continental divide Impacts water in states from California to New Mexico

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1.2 Million acre- feet 7.1 Million acre- feet 20% of the population 80% of the population 80% of the precipitation 20% of the precipitation

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Colorado River Watershed Upper Basin CO, WY, UT, NM Lower Basin AZ, NV, CA, Mexico - Runs through driest part of the country - Averages precip = 4 - People relying on it - 25 million + in US - More in Mexico!

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Colorado River Compact 1922 Gallons vs % 7 states + Mexico

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Hydropower What is it? How does it work? Turbine Generator Types Conventional Run-of-the-River Tides

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Three Gorges Dam

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Daily Review #4 15. What causes drought? 16. What are some of the possible side effects of long-term drought in an area? 17. What, in your opinion, is the most important issue Colorado faces related to water? 18. How does a conventional hydroelectric dam create electricity? End

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Water Pollution Types Sediment Nutrients/chemicals Pathogens Trash Point Nonpoint Fertilizer Algal blooms Erosion

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Marine Pollution Accelerating rapidly Noise pollution Oil spills Great Pacific Garbage Patch Ecosystem Impacts

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Fixing Pollution Clean Water Act (1972) Reduce, reuse, recycle Limit fertilizers Limit erosion Changes in agricultural practices Barriers during construction, mining, etc. Decrease usage