Name: ______________________ S.S. No. ________________ Grade: _________

 

1. How does Environmental Hydrology differ from Classical Hydrology? Be specific.

2. Describe the solution for cleaning the Tlaxiaco river. Why is the proposed solution better than conventional wastewater treatment? Why is there a need for both oxidation pond and constructed wetland?

3. What is the flood pulse concept? Where does the flood pulse occur? How does the flood pulse increase ecosystem productivity?

4. How has the leveeing of rivers affected stream hydrology, hydraulics, and ecology? What are the advantages and disadvantages of levees?

5. Why is eutrophication generally regarded as bad for the environment? What is an effective long-term measure to deal with phosphorous deposits in lakes that have been subject to eutrophication? What is the positive feature of eutrophication?

6. Why is sediment transport and erosion at a maximum at an annual precipitation of 300 mm?

7. Why is the Salton Sea there? What is the current salinity of the Salton Sea? What are the four sources of salts entering the sea? What is the most important issue in the defense of the Salton Sea?

8. Why is the Salton Sea in the middle of the controversy about the transfer of water from Imperial Valley to San Diego? Explain in technical and political terms.

9. What is the main use of bulk sodium chloride? Explain what happened at Kesterton reservoir. How was it resolved?

10. Explain why irrigated agriculture can become nonsustainable. What can be done to cope with this menace?

11. Describe the relations between climate, wetlands, water resources, and irrigated agriculture in the Ojos Negros valley. What is the calculated rate of groundwater depletion? What is the main reason for the depletion?

12. What is the Tragedy of the Commons? When does it occur? How can we cope with it?