Groundwater
Earth Science: Ch 5—p. 140-148Supplementary Textbook Materials:
Ch 16—p. 153-168
Ogallala supported agriculture
Ogallala Aquifer
• Exploited in Great Plains agriculture
• Water table dropped
• Recharge rate low
San Joaquin Valley subsidence
Not able torecover dueto aquifercompaction
Agriculture sources of groundwater contamination
Landfill leachate contamination
Secondary sewage treatment
Arecibo, Puerto Rico: Radio Telescope in Sinkhole
Karst drainage of manmade lake in Missouri
Karst towering buttes
http://en.wikipedia.org/wiki/Yangshuo
Thailand Karst Towers
http://www.siue.edu/GEOGRAPHY/ONLINE/Gillespie.htm