1. Chapter 13 Water: A Limited Resource

2. Importance of Water  Cooking & washing  Agriculture  Manufacturing  Mining  Energy production  Waste disposal  Use of freshwater is increasing

3. Properties of Water H bonds

4. Distribution of Water on Earth

5. Freshwater Aquifer

6. Watershed  A watershed is the area of land where all of the water that is under it or drains off of it goes into the same place

7. Too Much Water  Flooding  Both natural and human-induced  Modern floods are highly destructive  Humans have removed water-absorbing plant cover from soil-drained wetlands  building on floodplains

8. Urban vs. Pre-Urban Floodplains

9. Floods of Summer 2008

10. Too Little Water  Problems  Drought  Overdrawing water for irrigation for irrigation  Aquifer depletion  Subsidence  Sinkholes

11. Too Little Water  Problems (continued)  Saltwater Intrusion

12. Water Problems In US and Canada  US has a plentiful supply of freshwater  Many areas have a severe shortages

13.  Water shortages in West and Southwest Water Problems In US and Canada

14. Water Problems in US and Canada- Surface Water  Mono Lake (Eastern CA)  Colorado River Basin

15. Water Problems in US and Canada—Groundwater  Aquifer Depletion

16. Global Water Problems  Amount of freshwater on planet CAN meet human needs  BUT, it is unevenly distributed  Problems:  Climate Change  Drinking Water  Population Growth  Sharing Water Resources Among Countries

17. Global Water Problems  Drinking Water Problems  Many developing countries have insufficient water to meet drinking and household needs  Population Growth  Increase in population means __________  Limits drinking water available  Limits water available for agriculture (food)

18.  Sharing Water Resources Among Countries  Rhine River Basin  Potentially Volatile International Water Situations  Jordan River  Nile River Global Water Problems

19. Water Management  Main Goal: Provide sustainable supply of high-quality water 1. Dams and Reservoirs 2. Water Diversion Projects 3. Desalinization

20. Dams and Reservoirs  Benefits:  year-round supply of water  Electricity  Recreational activities  Disadvantages  Alter the ecosystem  Reduce sediment load Amazon Watch

21. Dams and Reservoirs  Glen Canyon Dam  Regulated flow has changed ecosystem

22. Dams and Reservoirs

23. Water Diversion Projects

24. Water Conservation 1. Reducing Agricultural Water Waste 2. Reducing Industrial Water Waste 3. Reducing Municipal Water Waste