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<br />polities have worked out programs for their water
<br />supply through the year of 2050, and these data
<br />serve as the basis for their continued growth. Modern
<br />industrialists will not think of locating a new plant in
<br />an area unless they can see confirmed data assuring
<br />them of 0 water supply through the next 30 years,
<br />in order that the expenditure of millions of dollars
<br />for plants and equipment can be justified.
<br />
<br />
<br />This is the Orange County, California Analog,
<br />one of the oldest in service. It was developed to assist
<br />in resolving the serious problems of ground. water
<br />depletion to maximize the use, and to avoid ~alt
<br />water intrusion from the Pacific Ocean. Information
<br />gained from this Analog has enabled the variou.s
<br />Governmental Agencies, including the Corps of Engi-
<br />neers Soil Conservation Service, Water Districts, and
<br />the U'. S. Geological Survey, to determine the location
<br />and size of underground basins which can be re-
<br />charged from surface water for use by pumps at a
<br />later date. The Corps of Engineers has perfected a
<br />program of floodways and s'preadin~ basins to col.
<br />lect water during heavy rams, which then perco-
<br />lates into the ground for later use by municipalities
<br />and agriculture. The heavy rains of February 1969
<br />are examples of how this program works. The tre-
<br />mendous volume of water flowed into the spreading
<br />basins where much of it was recaptured, and per-
<br />mitted to percolate into the ground wat.er basins
<br />for re-use during dry periods. The alternative would
<br />have been that the water would have rushed directly
<br />into the Pacific Ocean, and be lost for re-use at
<br />critical times. The introduction of this water also
<br />enabled the water managers to keep the ground
<br />water table at an elevation which prevents the in-
<br />trusion of sea water into the basin.
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<br />10
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<br />Pictured above is the Analog Model for Biscayne
<br />Bay, Florida, involving the Miami Beach - Southern
<br />Florida area. The problem here is the ever increasing
<br />population growth, increasing the withdrawal of
<br />fresh water from the ground water basin. As more
<br />water is pumped from the basin, the water table
<br />lowers, and sea water begins to intrude and jeopar-
<br />dize growth potentialities of the Miami - Miami
<br />Beach area. Through cooperative efforts of the vari-
<br />ous water agencies involved, methods for recharging
<br />the ground water basin w.ere perfected to meet the
<br />ever increasing needs of the growing area, as well
<br />as preventing the intrusion of sea water. This Analog,
<br />and the Orange County, California Model, demon-
<br />strate the wide capabilities of the concept to analyze
<br />specific problems, and to project workable solutions.
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<br />This is the newest of the long series of Electric-
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