Veracruz, Mexico

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Veracruz, Mexico
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Runoff entering a large sinkhole
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SINKING STREAMS

• Water directly recharges aquifer
• are very susceptible to rapid contamination of
  large aquifers
• Seco Creek Sinkhole

El Rio Caha-Bon, Guatemala
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Once underground, water moves rapidly, with
minimal filtration, through large passage-ways
in the limestone.
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SPRINGS

• Where the water table meets the surface