alternative approaches for water extraction in areas subject to saltwater upconing
DESCRIPTION
ALTERNATIVE APPROACHES FOR WATER EXTRACTION IN AREAS SUBJECT TO SALTWATER UPCONING David L. Tarbox, P.G., P.H.G. William C. Hutchings, P.G. HSA Engineers & Scientists, Tampa, FL. Withdrawal (Q). Recharge. T-3. T-2. T-1. Withdrawal (Q). T-3. T-2. T-1. Fully Penetrating. Shallow. Trench. - PowerPoint PPT PresentationTRANSCRIPT
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ALTERNATIVE APPROACHES FOR WATER EXTRACTION IN AREAS
SUBJECT TO SALTWATER UPCONING
David L. Tarbox, P.G., P.H.G.William C. Hutchings, P.G.
HSA Engineers & Scientists, Tampa, FL
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Simulate LATERAL INTRUSION by reducing the
quantity of recharge by the same volume being
withdrawn
Withdrawal (Q)
T-1T-2
T-3
Recharge
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UPCONING is influenced by:
Horizontal and vertical hydraulic conductivities,
Rate and method of groundwater extraction, Proximity of the intake to the interface
Withdrawal (Q)
T-1
T-3T-2
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-5.0 m-0.5 m
STRATIGRAPHY
ELEVATION
Fully Penetrating
Shallow
Trench
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250 MG/L 500 MG/L
1,000 MG/L
5,000 MG/L
10,000 MG/L
20,000 MG/L
Salinity
Uniform Recharge: 0.001 meter/day
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250 MG/L
500 MG/L
1,000 MG/L
5,000 MG/L
10,000 MG/L
20,000 MG/L
Salinity
Discharge Rate: 384 m3/day
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Salinity
250 MG/L
500 MG/L
1,000 MG/L
5,000 MG/L
10,000 MG/L
20,000 MG/L
Discharge Rate: 384 m3/day
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HORIZONTAL TRENCH
Salinity
250 MG/L
500 MG/L
1,000 MG/L
5,000 MG/L
10,000 MG/L
20,000 MG/L
Discharge Rate: 384 m3/day
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APPLICATION
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CONCLUSIONSWith Suitable Conditions
Encourage similar approaches by large users of irrigation water
Golf Courses, Nurseries, & SubdivisionsProtect groundwater from saltwater
intrusion