Groundwater Recharge in a Desert Environment: The Southwestern United States

Title Page......Page 2
Copyright......Page 3
Contents......Page 4
Preface......Page 6
Introduction and Overview......Page 8
STATEMENT OF PROBLEM......Page 9
HISTORICAL PERSPECTIVE 
......Page 11
SYNTHESIS......Page 13
REFERENCES......Page 17
INTRODUCTION......Page 22
BACKGROUND
......Page 23
FLOW AND TRANSPORT MODEL......Page 25
DISCUSSION OF PRIMARY CONTROLLING FACTORS......Page 28
5. UNCERTAINTY......Page 32
SUMMARY......Page 33
REFERENCES......Page 34
INTRODUCTION AND SETTING......Page 36
METHODS......Page 39
SOURCES OF CHLORIDE......Page 41
RESULTS AND DISCUSSION......Page 44
SUMMARY
 AND CONCLUSIONS......Page 51
REFERENCES......Page 52
1. INTRODUCTION 
......Page 55
2. METHODS......Page 60
3. RESULTS......Page 61
4. DISCUSSION......Page 66
REFERENCES......Page 71
1. INTRODUCTION......Page 74
2. RECHARGE THEORY......Page 75
3. EPHEMERAL CHANNEL RECHARGE......Page 76

4. TEMPORAL RECHARGE CONSIDERATIONS......Page 78
REFERENCES......Page 80
1. INTRODUCTION......Page 82
2. STUDY SITE......Page 83
3. METHODS AND MEASUREMENTS......Page 84

4. RESULTS AND DISCUSSION......Page 91
5. CONCLUSIONS......Page 101
REFERENCES......Page 102
INTRODUCTION......Page 105
METHODS......Page 107
RESULTS AND DISCUSSION......Page 109
SUMMARY AND CONCLUSIONS......Page 114
REFERENCES......Page 115
1. INTRODUCTION......Page 117
2. MOUNTAIN BLOCK, MOUNTAIN FRONT,AND RECHARGE......Page 119
3. ESTIMATION METHODS......Page 123
4. MOUNTAIN BLOCK HYDROLOGY
......Page 129
5. CONCLUSIONS AND FUTURE WORK......Page 135
REFERENCES......Page 136
INTRODUCTION......Page 142
SITE DESCRIPTION......Page 144
EXISTING KNOWLEDGE OF RECHARGE TO THE SALT LAKE VALLEY......Page 145
NOBLE GASES AS RECHARGE ELEVATION TRACERS......Page 147
CONSTRAINING RECHARGE TEMPERATURES OF SOURCE WATERS 
......Page 149
MOUNTAIN-BLOCK RECHARGE FRACTIONS......Page 150
TRITIUM/HELIUM-3 AGES......Page 154
DISCUSSION......Page 156
CONCLUSIONS......Page 158
REFERENCES......Page 159
1. INTRODUCTION......Page 162
2. METHODS 
......Page 168
3. RESULTS AND DISCUSSION......Page 171
REFERENCES......Page 186
INTRODUCTION......Page 220
STUDY AREA  
......Page 221
PREVIOUS ISOTOPE STUDIES OF TUCSON BASIN 
......Page 222
THE DATA SET AND ITS LIMITATIONS......Page 223
TUCSON PRECIPITATION 
......Page 224
SURFACE WATER AND FLOOD PLAIN GROUNDWATER......Page 225
CENTRAL BASIN GROUNDWATER: LARGE-SCALE ISOTOPE DISTRIBUTION PATTERNS 
......Page 227
SMALL-SCALE RECHARGE......Page 233
DISCUSSION......Page 234
CONCLUSIONS......Page 235
REFERENCES......Page 236
1. INTRODUCTION......Page 238
2. TECHNIQUES FOR ESTIMATING RECHARGE......Page 239
3. RECHARGE ESTIMATION RELATED TO AQUIFER
VULNERABILITY TO CONTAMINATION......Page 251
REFERENCES......Page 252
INTRODUCTION......Page 258
THE PHYSICAL CONCEPTUAL FRAMEWORK......Page 259
DISCRETE FLUX-STORAGE RELATIONSHIPS......Page 263
STREAM BOUNDARY CONDITIONS 
......Page 266
SHALLOW WATER TABLE APPROXIMATION......Page 267
MOUNTAIN-FRONT RECHARGE......Page 269
ABRUPT CLIMATE TRANSITION SCENARIO 
......Page 271
REFERENCES......Page 273
Effects of Environmental Change on Groundwater Rechargein the Desert  Southwest......Page 275
MECHANISMS FOR CHANGE IN RECHARGE 
......Page 276
EFFECTS OF CHANGES IN RECHARGE RATE ON GROUNDWATER SYSTEMS......Page 283
PALEOENVIRONMENTAL EVIDENCE FOR CHANGES IN RECHARGE IN THE WESTERN UNITED STATES DUR1NG THE LATE QUATERNARY......Page 285
RESPONSE OF GROUNDWATER SYSTEMS TOVARIATIONS IN LATE QUATERNARYENVIRONMENTAL CONDITIONS......Page 286
PREDICTION OF RESPONSE TO CURRENT AND FUTURE ENVIRONMENTAL CHANGES......Page 290
REFERENCES......Page 292
Glossary......Page 297