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Water Supply Concepts for South Florida

Water Supply Concepts for South Florida. For the Green Forum on Water Issues By Dr. Richard Punnett. Specific Points:. Definition for Drought Levee Seepage Sea Level Rise Environmental Restoration. Definition of Drought.

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Water Supply Concepts for South Florida

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  1. Water Supply Conceptsfor South Florida For the Green Forum on Water Issues By Dr. Richard Punnett

  2. Specific Points: • Definitionfor Drought • Levee Seepage • Sea Level Rise • Environmental Restoration

  3. Definition of Drought • Webster: a period of dryness especially when prolonged. Dryness is defined as lacking or deficient in moisture. • CPC: Drought is a deficiency of moisture that results in adverse impacts on people, animals, or vegetation over a sizeable area. • Wikipedia: A drought is an extended period of months or years when a region notes a deficiency in its water supply. For most regions, drought is a normal, recurrent feature of the climate…

  4. South Florida Definition: • Dry hydrologic conditions under which water supply needs* are not met. *environmental, agricultural, municipal and domestic

  5. South Florida Definition: • Dry hydrologic conditions under which water supply needs* are not met. *environmental, agricultural, municipal and domestic • Regardless of how “dry” it is!

  6. Groundwater Concepts • Before discussing Levee Seepage, Sea Level Rise and Environmental Restoration, a short presentation of groundwater concepts might be helpful…

  7. Groundwater Concepts in the Miami-Dade Area

  8. Miami Dade Groundwater

  9. Groundwater Fluctuation

  10. Groundwater Fluctuation

  11. Levee Seepage

  12. Levee Seepage

  13. Levee Seepage: Friend or Foe? • Friend • Foe • Both • Neither

  14. Levee Seepage: Friend or Foe? • Both! • In the LEC during wet periods, it is a foe. • In the LEC during dry periods, it is a friend. • To Everglades National Park, it is a foe. • To Biscayne Bay National Park, it is a friend. • Several management techniques available

  15. Levee Seepage: Friend or Foe? • Both! • In the LEC during wet periods, it is a foe. • In the LEC during dry periods, it is a friend. • To Everglades National Park, it is a foe. • To Biscayne Bay National Park, it is a friend. • Several management techniques available • Salient Point: Seepage needs to be managed, not cutoff.

  16. Sea Level Rise 1/64”/yr ¼”/yr

  17. Sea Level Rise Almost 1/10” /yr

  18. Flood control: Good and Bad News • Good news! Water still runs downhill…

  19. Flood control: Good and Bad News • Good news! Water still runs downhill… • Bad news! We might become downhill!! (But not soon)

  20. Miami Dade Groundwater

  21. Miami-Dade Sea Level Rise

  22. Sea Level Rise Effects: • Flood control • Coastal flooding issues • Slower rate of removal of flood water • Potential loss of flood storage • Water supply • Potential loss of storage for freshwater

  23. Groundwater Fluctuation

  24. Environmental Restoration How are water supply budgets affected by the Comprehensive Environmental Restoration Plan (CERP)?

  25. Water Budgets Pre-CERPPost-CERP

  26. Water Budget Warning! • Average annual values help us understand system changes and approaches to restoration • A restoration plan must include modeling to show water fluctuations and timing of flows throughout the system over a long period

  27. Summary • Definition keys: • Not just dry hydrologic conditions • Not meeting water needs • Levee seepage is: • Both friend and foe • Must be seasonally managed (not cut off)

  28. Summary Cont’d • Sea Level rise: • Requires increased flood measures • Reduced ground/aquifer storage • CERP will: • Capture freshwater currently sent to tide (lost from the system) • Provide storage to improve the timing of water deliveries throughout the system

  29. Your turn… Thank You!

  30. Your turn… Thank You!

  31. 400,000 acre feet per year? 1 acre (football field), 75 miles high!

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