1 engineering analysis of properties designated within the city of bonita springs as “density...
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Engineering Analysis of Properties Designated within the City of Bonita Springs as
“Density Reduction/Groundwater Resource” (DR/GR) Land Use Category
CN 03-005
Greg F. Rawl, P.G.
CITY OF BONITA SPRINGSCITY OF BONITA SPRINGS
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Regional GeologicCross Sections
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Regional Geologic Cross Section A – A’
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Regional Geologic Cross Section B – B’
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Local GeologicCross Sections
E
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Local Geologic Cross Section E – E’
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Local GeologicCross Sections
F
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Local Geologic Cross Section F – F’
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Local GeologicCross Sections
H
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Local Geologic Cross Section H – H’
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Local GeologicCross Sections
K
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Local Geologic Cross Section K – K’
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Surficial Aquifer Water Level Contour Plot for
May of 2003 End of Dry Season
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Surficial Aquifer Water Levels Difference Plot Between May 2003 &
May 1992End of Dry Season
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Surficial Aquifer Water Level Contour Plot for
October of 2002End of Wet Season
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Surficial Aquifer Water Levels Difference Plot Between October 2002
& October 1991End of Wet Season
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Saline Water Intrusion MonitoringSouth Of Imperial R. & East of Old 41
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Lower Tamiami Aquifer Chloride
Concentration Plot for April 1989
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Lower Tamiami Aquifer Chloride
Concentration Plot for April 2001
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Lower Tamiami Aquifer Chloride
Concentration Plot for October 1989
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Lower Tamiami Aquifer Chloride
Concentration Plot for October 2001
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Summary of Literature Net Recharge Rates
Krulikas and Giese (USGS 1995) estimated 0.6 to 9.02 inches/year, with induced recharge rates greater than 9.02 inches/year possible.
Shoemaker et al (USGS 2003) estimated net recharge rates from -5.12 to 14.96 inches/year.
DHI Big Cypress Basin Integrated Hydrologic-Hydraulic Model, 2002 calculated 17.1 inches/year average for 1990 to 1995.
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SFWMD – Lower Tamiami Aquifer Average Recharge
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Shoemaker Simulated Net Recharge to Water Table Aquifer During March 1996
Source: Potential for Saltwater Intrusion into the Lower Tamiami Aquifer Near Bonita Springs, Southwestern FloridaUSGS Water Resource Investigations Report 03-4262
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Simulated Net Recharge to Water Table Aquifer During March 1996
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Net Recharge to Water Table – Steady State Dry Season
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Shoemaker Simulated Net Recharge to Water Table Aquifer During September 1996
Source: Potential for Saltwater Intrusion into the Lower Tamiami Aquifer Near Bonita Springs, Southwestern FloridaUSGS Water Resource Investigations Report 03-4262
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Simulated Net Recharge to Water Table Aquifer During September 1996
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Net Recharge to Water Table – Steady State Wet Season
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Average Net Rechargefor the Bonita Springs
Model Region is 2.27 Inches per Year
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Shoemaker Simulated Net Recharge to Water Table Aquifer During March 1996
Average Net Rechargefor the Bonita Springs
Model Region is 7.87 Inches per Year
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Shoemaker Simulated Net Recharge to Water Table Aquifer During September 1996
Average Net Rechargefor the Bonita Springs
Model Region is 5.31 Inches per Year
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Simulated Net Recharge to Water
Table – Average Annual Steady State
for 2000 to 2003
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Bonita DR/GR Aerials
Many existing land uses
95+% of land altered
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Regional Geologic Cross Section C – C’
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Regional Geologic Cross Section D – D’
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Saline Water Intrusion Monitoring
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Soils Map
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Current Lee Co FLUM
DR/GR General
Interchange Resource
Protection Wetlands
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Surface Water Sites
Lee County sampling sites
ECT (Study) sampling sites
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Zn, 0.01 Class III Standard
0.000
0.020
0.040
0.060
Site 0 Site 1 Site 2 Site 3 Site 4
Zn
, in
mg
/L
Simulated Results ECT Median Sampling Results
ECT Mean Sampling Results Lee County
ECT Max ECT Min
Standard