Wadi Hydrology
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Summary
The literature of hydrology abounds with texts on the hydrological and water resource problems in humid regions. However, this is not the case for the arid or semi arid regions. The situation is exemplified by the fact a concrete definition for the term “wadi”, as accepted by UNESCO for describing these areas, is difficult to find.
Arguably the first book devoted entirely to examining this important resource, Wadi Hydrology presents methodologies for sustainable management of wadis and their water resources. Through unique physical approaches, field cases, sample interpretations, and various applications to different models, this book provides an in-depth understanding of these systems that illustrates the efficiency of harnessing water from wadis. The author compiles the most up-to-date information on arid region hydrology, including specific techniques for hydrological calculations and desertification assessments, and includes examples and solved problems in each chapter.
Table of Contents
Introduction
General
Arid Region Classification
Desertification
Droughts
Climate Change Impacts
Wadi Hydrology
Methodological Distinctions
References
Wadi Characteristics
General
Geomorphology
Soil and Landforms
Rock Environments in Arid Regions
Drainage Basin Features
Time of Concentration
References
Rainfall Pattern
General
Rainfall Features
Temporal Distribution of Rainfall
Aridity Index
Accumulative Rainfall Curve (ARC)
Intensity –Duration –Frequency (IDF) Relationship
Rainy and Nonrainy Days
Rainfall Distribution Functions and Prediction
Spatial Distribution of Rainfall
Triple Variable Drought Descriptor
References
Runoff and Hydrograph Analysis
General
Hyetograph –Hydrograph Relationship
Rating Curve
Critics of Conventional Methods
Infinitesimal Runoff Coefficient (IRC)
Hydrograph and Unit Hydrograph Derivation in Arid Regions
Modified Snyder Synthetic Hydrograph
Dimensionless Unit Hydrograph (DUH)
Cross-Section Flood Discharge
Curve Number and Mannings Coefficient in Arid Regions
Flood Hazards
References
Groundwater Recharge and Evaluation
General
Geology and Groundwater
Groundwater and Recharge
Techniques for Groundwater Recharge Estimation
Chloride Mass Balance (CMB) Methods
Environmental Isotopes
Depression Cone
Discharge Calculation in Large Diameter Wells
Aquifer Tests
Aquifer Heterogeneity and Methods
Type Straight-Line Method
Standard on Index for Groundwater Quality Evolution
Climate Change and Groundwater
References
Groundwater Management Methods for Arid Regions
General
Safe Yield and Groundwater Management
Management Environments in Arid Regions
Arid Regions and Wadi Conditions
Strategic Groundwater Storage Planning
Probabilistic Risk Management in an Aquifer
Groundwater Management and Well Optimization in Arid Regions
Wadi Groundwater Management System Principles
Integrated Management Principles
Artificial Mixing of Potable and Saline Ground Waters
References
Sediment Transport in Arid Regions
General
Surface Cover Features
Sedimentation in Arid Environments
Rock Weatherability
Soil Erodibility
Erosion Conditions and Concluding Results
Sediment Yield Modeling in Arid Regions
Simple Sediment Yield Model Formulation
References Index
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