1. Explain how the orographic effect distributes water west to east in California. 2. How do shape, size and roughness of a channel affect a stream's water velocity and thus its erosive power? I 3. What are the three main ways in which streams transport sediment? Describe each. 4. What is the difference between porosity and permeability when describing characteristics of an aquifer? 5. Summarize the consequences of aquifer depletion. 6. Using the example of the Carlsbad desalination plant, summarize the desalination process for making fresh water.