Groundwater
Earth Science: Ch 5—p. 140-148Supplementary Textbook Materials:
Ch 16—p. 153-168
Wells after drawdown
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
Groundwater purification
Groundwater purification
Agriculture sources of groundwater contamination
Landfill leachate contamination
Primary sewage treatment
Secondary sewage treatment
Drinking Water Standards
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