1. Monday November 12 th 2012 QU: What is the subcontinental divide? Current Event due Friday OBJ: Aquifers, Watersheds

2. Subcontinental Divide On one side the water flows to the Mississippi and the other side flows toward Lake Michigan

3. Ogallala Aquifer

4. Aquifer Aquifer: An aquifer is a body of saturated rock through which water can easily move. – permeable and porous

5. Aquifers ½ of the United States population draws water from aquifers

6. Ogallala Aquifer Ogallala Aquifer aka High Plains Aquifer – Average depth of 200 feet – Enough water to cover all 48 states at a depth of 2 feet – Texas and Nebraska have the most land above it

7. Ogallala Aquifer Largest groundwater system in North America – Groundwater: water located beneath the earth's surface in soil pore spaces and in the fractures of rock formations.

8. Why care about the High Plains Aquifer? Used for hydroelectric, wells, irrigation, grazing – Provides 40% of feedlot to beef in US – 50% of all of the worlds grain is from land irrigated by the Ogallala Aquifer – Directly responsible for $20 billion in revenue

9. Ogallala in Danger Farming draws 1 ½ feet in a year but rain only replenishes ½ inch/year – Recharge zone: An area of land through which water percolates to be stored as groundwater

10. Aquifers in Danger Pesticides, dumps, over use Very little economic incentive to change

11. Efforts to Change Farming strategies to slow the movement of water Less pesticides Rotating crops to vegetation that needs less water *All Costly and Very little economic incentive to do*

12. Aquifer compared to Watershed Watershed: Watershed refers to the land over and through which water flows to reach a common water body. It has two components - surface drainage and groundwater drainage. Map of US Watersheds

14. Watershed We are part of the Great Lakes St. Lawrence River Basin

15. Video http://www.youtube.com/watch?v=_Z9c_KZK 2t4&NR=1 http://www.youtube.com/watch?v=_Z9c_KZK 2t4&NR=1

16. Great Lakes St. Lawrence River Basin Includes 30 million people in US and Canada 7% of U.S. produce and 25% of Canadian produce

17. 1998 Canada approved permit – Take 160 million gallons from L. Superior to be sold in Asia—later cancelled agreement Huge conflict Highlighted issue of transboundary conflic Great Lakes St. Lawrence River Basin

18. Governors and Canadians came together in 2001 to create the GLSLRB Sustainable Water Resources Compact – Regulates diversion and water management – Doesn’t remove prior agreements

19. Compact pioneered collaborative and whole- basin schemes Great Lakes St. Lawrence River Basin

20. Compact Loophole and Exceptions “Bottled Water Loophole” – Cannot use any container greater than 5.7 gallons to remove water Doesn’t include items that include water – Paint, clothes etc.

21. Video http://www.greatlakeswaterwars.com/

22. Working to Create More Drinking Water Desalination: – Destillation: heat water until evaporates and it condenses as freshwater – Reverse Osmosis: uses high pressure to force saltwater through a membrane filter with pores small enough to remove the salt

23. Disadvantages… Expensive, uses a lot of energy, the pumping kills marine life, produces very salty wastewater when dumped threatens surrounding life.

24. Tuesday November 13 th 2012 QU: When a resource or service is privatized what is actually occuring? Current Event Due Friday OBJ: Water Wars Movie

25. WedNesday November 14 th 2012 QU:One advantage of hydroelectric power is that it produces little air pollution compared to other forms of energy. START WRITING HERE: Considering that hydroelectric power involves a disruption in the flow of a river, should we continue to invest in it? Why or why not? **Current Event Due on Friday** Chapter 7 and 11 test on Monday OBJ: Water Wars Movie

26. Thursday November 15 th 2012 QU: Choose a solution to the world water crisis discussed in the film that you found most interesting. START WRITING HERE: Explain why this stood out to you. Do you think it is effective? Why or why not? **CURRENT EVENT due TOMORROW** OBJ: Water Wars Movie

27. Friday November 16 th 2012 QU: **Aquatic Biomes, Water Test on Monday** OBJ: Current Events, Review

28. Monday November 19 th 2012 QU: How did you study for this test? **Turn in E.C. Review** OBJ: Chapter 7 and 11 Test

29. Tuesday November 20 th 2012 QU: Rate the test from 1-10. (1 is easy, 10 is hard) **Journals Due Today** OBJ: Caves (Planet Earth)