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“ In the wake of burgeoning populations, water development

“ In the wake of burgeoning populations, water development is currently being driven beyond the absolute limits of guaranteeable supplies and past the point of long-term sustainable livelihoods, thus, preparing the ground for future crises throughout the world.”

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“ In the wake of burgeoning populations, water development

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  1. “ In the wake of burgeoning populations, water development is currently being driven beyond the absolute limits of guaranteeable supplies and past the point of long-term sustainable livelihoods, thus, preparing the ground for future crises throughout the world.” (Water Management in Desert Environments, Bruce Roberts)

  2. Overview of Presentation A. Hydrological Concepts B. Tucson Geography and Hydrology C. Population Change in Tucson D. Tucson’s Economic Base E. Water Consumption Patterns F. Water Management G. Other Politics H. Central Arizona Project I. Solutions?

  3. Aquifer Structure

  4. Water Supply Surface Water Groundwater CAP Water

  5. Tucson AMA

  6. PopulationTransition

  7. Tucson’s Economic Base 31 % Service Industry 23% Government 22% Trade 9% Manufacturing 6% Construction 4% TCPU 4% Fire 1% Mining

  8. Groundwater Consumption by Sector Municipal Groundwater Consumption 1985 112,655 AF 1990 123,165 AF 1995 147,080 AF Agricultural Groundwater Consumption 1985 111,004 AF 1990 89,815 AF 1995 95,379 AF Industrial Groundwater Consumption 1985 55,744 AF 1990 47,974 AF 1995 59,422 AF

  9. Hydrological Transitions Effects of drop in water table: • Reduced Inflow/Outflow • Altered Inflow/Outflow Patterns • Compaction of Aquifer (subsequent decrease in recharge) • Land Subsidence • Earth Fissures

  10. Ecological Transitions Effects of drop in water table: • Reduced Streamflow • Drying stream beds • Consequences for Riparian Habitats • General vegetation die-off • Desertification

  11. Impacts on Society • Altered Inflow/Outflow Patterns : Effects on local wells • Land Subsidence and Earth fissures: Damage to well casings, sewage systems, irrigation systems, building foundations. • Increased salinization/TDS: Poorer water quality • Problems associated with increased pumping lift

  12. Economic Transitions • Residential Developers on the rise • Environmental Technology on the rise • Telecommunications Industry rising • Agriculture Declining

  13. Policy Dynamics Governing Bodies and Present Laws • ADWR (vs. Pima County or Tucson Planning) • Groundwater Code of 1980 (safe-yield by 2025) • Proposition 200

  14. Political “Transitions” As groundwater supplies run out: • Increased number of governing bodies managing H20 • Increased number and activity of citizen groups • Increased spending: management, education, technology and research, disputes (govt and legal) • Increased tension among stakeholders

  15. Business Influence Govt. Policy Citizen Groups Private Citizens Research & Technology Groundwater Supply Agriculture Mining Industry Population Other Business

  16. Solutions? • Find New Resources, Replenish Current Resources • More Efficient Use of Resources • Reduce Consumption

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