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“ 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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Presentation Transcript
slide1

“ 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)

slide2

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?

slide6

Water Supply

Surface Water

Groundwater

CAP Water

slide10

Tucson’s

Economic Base

31 % Service Industry

23% Government

22% Trade

9% Manufacturing

6% Construction

4% TCPU

4% Fire

1% Mining

slide11

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

slide12

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
slide15

Ecological

Transitions

Effects of drop in water table:

  • Reduced Streamflow
  • Drying stream beds
  • Consequences for Riparian Habitats
  • General vegetation die-off
  • Desertification
slide16

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
slide17

Economic

Transitions

  • Residential Developers on the rise
  • Environmental Technology on the rise
  • Telecommunications Industry rising
  • Agriculture Declining
slide18

Policy

Dynamics

Governing Bodies and Present Laws

  • ADWR (vs. Pima County or Tucson Planning)
  • Groundwater Code of 1980 (safe-yield by 2025)
  • Proposition 200
slide19

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
slide20

Business Influence

Govt.

Policy

Citizen Groups

Private

Citizens

Research & Technology

Groundwater

Supply

Agriculture

Mining

Industry

Population

Other

Business

slide21

Solutions?

  • Find New Resources, Replenish Current Resources
  • More Efficient Use of Resources
  • Reduce Consumption