What are some global concerns about water?

Where is most of the water? Most valuable resource Less than 3% is freshwater Most of that in unavailable 0.49% available Constantly circulating

(2%) (.62%)

Water Cycle Evaporation Precipitation Infiltration or runoff Stored Repeat the cycle

Reservoir Definition Residence time

Project Reflection 1. Effectiveness of group members a. Were you a “good” group member? Give a specific example. b. Was person A a “good” group member? Give a specific example. c. Was person B a “good” group member? Give a specific example. d. Was person C a “good” group member? Give a specific example. 2. What did you learn from presenting to the town council of people not from this class?

Daily Review #1 1. How much of Earth’s water is freshwater? 2. Where is the majority of Earth’s water? 3. In what reservoir does water stay the longest? 4. Where does the water you drink at school come from? 5. What was surprising or interesting that you discovered from completing the water footprint activity? End

Direct vs. Indirect Water Usage Direct Drinking water Shower Watering your lawn Indirect Food Clothes

Groundwater – What and Why? What? Infiltrated water Major source for Consumption Irrigation Surface water (streams, etc.)

What happens underground? Where it goes is changed by Porosity Permeability Underground Aerated zone Saturated zone Water table Aquifer

Groundwater moves Due to gravity Impacted by porosity and permeability Not a straight line Discharge vs. recharge Cones of depression Caused by wells Move to lowest point Change the water table Need to drill new wells Land subsidence

Ogallala Aquifer Where? What? Why is it significant? Much higher discharge Land subsidence Loss of drinking water Loss of water for irrigation Saltwater intrusion

Daily Review #2 6. What two factors affect groundwater? 7. How does the pumping out of water in a well effect the water table and why? 8. What is the Ogallala Aquifer and why is it important? 9. What do discharge and recharge mean? End