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Learn about alternative approaches for water extraction in saltwater upconing areas, including fully penetrating wells, shallow trenches, and horizontal trench systems. Discover strategies to protect groundwater from saltwater intrusion.
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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
Withdrawal (Q) Recharge T-3 T-2 T-1
Withdrawal (Q) T-3 T-2 T-1
Fully Penetrating Shallow Trench ELEVATION -0.5 m -5.0 m STRATIGRAPHY
STEADY STATE CONDITIONS Salinity 250 MG/L 500 MG/L 1,000 MG/L 5,000 MG/L 10,000 MG/L 20,000 MG/L Uniform Recharge: 0.001 meter/day
FULLY PENETRATING WELL 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
SHALLOW WELL 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
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
CONCLUSIONS With Suitable Conditions Encourage similar approaches by large users of irrigation water Golf Courses, Nurseries, & Subdivisions Protect groundwater from saltwater intrusion