1. Water Management Objectives: 1.Define sustainable water use. 2.Contrast the benefits and drawbacks of dam and reservoir construction. 3.Relate some of the issues involving water rights in the Missouri River. 4.Describe the pros and cons of water diversion projects. 5.Describe two methods of desalinization.

2. Water Management Providing a Sustainable Water Supply Sustainable water use means to use water resources carefully so that ecosystems are not destroyed and water is available for future generations.

3. Water Management Providing a Sustainable Water Supply Dams and Reservoirs Pros – Ensure year-round water supply Hydropower Recreation Flood control

4. Water Management Providing a Sustainable Water Supply Dams and Reservoirs Cons – Alter ecosystems Sediment Deposition Interfere with fish migration and spawning

5. Water Management Providing a Sustainable Water Supply: Dams and Reservoirs Example: Effect of Glen Canyon dam on the Colorado River in Grand Canyon

6. Water Management

7. Columbia River

8. Water Management Columbia River

9. Water Management Missouri River

10. Water Management Providing a Sustainable Water Supply Water Diversion Projects

11. Water Management Providing a Sustainable Water Supply Desalinization Two methods: 1) Distillation Condenses Simplified process: Salt water Pure water is collected Water boiled Produces steam

12. Water Management Providing a Sustainable Water Supply Desalinization Two methods: 1) Distillation 2) Reverse osmosis Salt water H2OH2O salt Pressure Fresh water Salt impermeable membrane