Water Resources Management: Water Conservation Methods.

1
Water Resources ManagementWater Conservation
Methods.

• Alexious Rolle Dept. of Statistics
• Environmental Statistics
• Water Resources

2
Water Resource ChallengesThe Commonwealth of
the Bahamas

• All freshwater is in the form of groundwater.
• Only three islands with significant water
  resources.
• Some small islands have no freshwater.
• Uneven and seasonal distribution of rainfall
  (North North Central Rainfall 50-60 in/yr
  (1,270-1,524 mm/yr), South Rainfall 36 in/yr
  (914 mm/yr) Pronounced Wet Season May to
  October).
• Most communities located away from resources.
• Need for high cost alternatives (Reverse
  Osmosis).
• Vulnerability of water resources 90 of
  the freshwater lenses within 5-ft (1.5-m) of the
  surface.

3
Rainfall for The Bahamas
4
What is different about the Water Resources in
The Bahamas?

• Hydrogeology
• Freshwater Lenses with Unique
• Characteristics. Unique Geology.

5
Water Resources of The Bahamas

• The groundwater resources of the Commonwealth
  comprise the fresh, brackish, saline and
  hypersaline waters found in the near and deep
  subsurface and in the lakes and ponds that
  intercept the surface. The freshwater resources
  occur as three-dimensional lens-shaped bodies,
  which overlie brackish and saline waters at
  depth.

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Table Freshwater Resources
7
Bahamas National
Accounts Statistics
  GROSS VALUE ADDED BY INDUSTRIAL ORIGIN GROSS VALUE ADDED BY INDUSTRIAL ORIGIN GROSS VALUE ADDED BY INDUSTRIAL ORIGIN GROSS VALUE ADDED BY INDUSTRIAL ORIGIN GROSS VALUE ADDED BY INDUSTRIAL ORIGIN GROSS VALUE ADDED BY INDUSTRIAL ORIGIN      
    WATER INDUSTRY            
                   
            (B thousands)  
  OUTPUT INTERMEDIATE GROSS NET GROSS DEPRECIATION NET WAGES NET
INDUSTRY   CONSUMPTION VALUE ADDED INDIRECT VALUE ADDED   VALUE AND OPERATING
      AT MARKET TAXES AT FACTOR   ADDED SALARIES SURPLUS
      PRICES   COST      
                   
2000 38,635 19,400 19,235 0 19,235 5,547 13,688 15,747 -2,059
2001 39,818 18,954 20,864 -5,206 26,070 5,397 20,673 14,777 5,896
2002 45,127 18,468 26,660 -3,600 30,260 5,734 24,525 17,691 6,834
2003 42,102 22,361 19,741 -4,680 24,421 5,585 18,836 17,714 1,122
2004 46,046 22,289 23,757 -4,188 27,945 6,215 21,730 18,779 2,951
2005 47,725 29,495 18,231 -3,748 21,979 6,389 15,590 19,970 -4,380
                   
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The BahamasWater Resource Vulnerability

• Ease of access and overexploitation. Saline
  intrusion.
• Easily damaged or destroyed by mans activities.
  Canals, borrow pits, rock mining.
• Prone to inundation. Storm surges, and sea level
  rise.
• Easily polluted
• A.) Close water table
• B.) Rock porosity and permeability
• C.) Lacking soils
• D.) Internal drainage
• E.) Scarce disposal sites in small island
  environment. Dumping habits, and lack of
  mains sewerage.

Difficult and Costly Clean Up!
9
Water Conservation Tips,to save water and money

• Toilet flushing accounts for 40 of the water
  usage each day.
• Showers and baths account for 35 of the water
  usage each day.
• Laundry and dishwashing account for 20 of the
  water usage each day.
• Drinking and cooking account for the additional
  5 of the water usage per day.
• (NOTE) Water your lawn in the early mornings and
  only when necessary. In our climate the lawn
  only requires water every 5-7 days, during the
  summer months.

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Water Resources Assessment of The Bahamas

• LATEST UPDATE
• Produced By- U.S. Army Corps of Engineers
• Using Existing Data and Reports.
• Approved by Government.
• Website http//www.sam.usace.army.mil/en/wra/Baha
  mas/Bahamas.html