regional groundwater flow. i. introduction a. diagram “ the water table is a subdued replica of...
TRANSCRIPT
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Regional Groundwater Flow
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I. Introduction
A. Diagram“ the water table is a subdued replica of the surface topography”
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II. Groundwater Flow Patterns
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II. Groundwater Flow Patterns
GW Divide
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II. Groundwater Flow Patterns
GW Divide
Hinge Line
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II. Groundwater Flow Patterns
GW Divide
Hinge Line
Recharge Zone Discharge ZoneDischarge Zone
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III. Piezometer Patterns
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IV. Effects of Topography
Toth systems of flow
local
intermediate
regional
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IV. Effects of Topography
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IV. Effects of Topography
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V. Flow System Mapping (recharge and discharge zones)
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V. Flow System Mapping (recharge and discharge zones)
A. Topography
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V. Flow System Mapping (recharge and discharge zones)
A. Topography
B. Piezometer Trends
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V. Flow System Mapping (recharge and discharge zones)
A. Topography
B. Piezometer Trends
C. Hydrochemical Trends
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V. Flow System Mapping (recharge and discharge zones)
A. Topography
B. Piezometer Trends
C. Hydrochemical Trends
D. Environmental Isotopes
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V. Flow System Mapping (recharge and discharge zones)
A. Topography
B. Piezometer Trends
C. Hydrochemical Trends
D. Environmental Isotopes
E. Soil, Vegetation and Land Surface Features
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VI. Salt Water Encroachment
A. The problem
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VI. Salt Water Encroachment
B. Possible Solutions
1. modification of pumping pattern
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VI. Salt Water Encroachment
B. Possible Solutions
2. artificial recharge
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3. pumping troughs
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4. freshwater ridge (injection barrier)
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5. subsurface barrier
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VI. Salt Water Encroachment
B. Possible Solutions
1. modification of pumping pattern
2. artificial recharge
3. pumping troughs
4. freshwater ridge (injection barrier)
5. subsurface barrier
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VI. Salt Water Encroachment
C. Predicting the Intrusion
Ghyben-Herzberg Principlez(x,y) = ρw * h(x,y)
ρs - ρw
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VI. Salt Water Encroachment
C. Predicting the Intrusion
Ghyben-Herzberg Principlez(x,y) = ρw * h(x,y)
ρs - ρw
If ρs = 1.025; ρw = 1.000then z(x,y) = 40h(x,y)