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| Water | |
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| Water | |
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| Hydrology and Hydrogeology | |
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| The Hydrologic Cycle | |
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| Energy Transformations | |
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| The Hydrologic Equation | |
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| Hydrogeologists | |
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| Applied Hydrogeology | |
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| The Business of Hydrogeology (What Do Hydrogeologists Do All Day?) | |
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| Sources of Hydrogeological Information | |
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| American Society of Testing and Materials Standards | |
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| Working the Problems | |
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| Solving Problems Using Spreadsheets | |
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| Elements of the Hydrologic Cycle | |
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| Evaporation | |
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| Transpiration | |
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| Evapotranspiration | |
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| Condensation | |
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| Formation of Precipitation | |
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| Measurement of Precipitation and Snow | |
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| Effective Depth of Precipitation | |
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| Events during Precipitation | |
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| Events During Precipitation | |
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| Stream Hydrographs | |
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| Rainfall-Runoff Relationships | |
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| Duration Curves | |
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| Determining Ground-Water Recharge from Baseflow | |
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| Measurement of Streamflow | |
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| Manning Equation | |
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| Properties of Aquifers | |
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| Matter and Energy (A Brief Review of Physics) | |
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| Porosity of Earth Materials | |
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| Specific Yield | |
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| Hydraulic Conductivity of Earth Materials | |
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| Permeameters | |
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| Water Table | |
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| Aquifers | |
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| Water-Table and Potentiometric Surface Maps | |
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| Aquifer Characteristics | |
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| Compressibility and Effective Stress | |
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| Homogeneity and Isotropy | |
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| Gradient of the Potentiometric Surface | |
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| Principles of Ground-Water Flow | |
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| Introduction | |
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| Mechanical Energy | |
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| Hydraulic Head | |
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| Head in Water of Variable Density | |
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| Force Potential and Hydraulic Head | |
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| Darcy's Law | |
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| Equations of Ground-Water Flow | |
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| Solution of Flow Equations | |
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| Gradient of Hydraulic Head | |
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| Relationship of Ground-Water-Flow Direction to Gradh | |
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| Flow Lines and Flow Nets | |
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| Refraction of Flow Lines | |
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| Steady Flow in a Confined Aquifer | |
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| Steady Flow in an Unconfined Aquifer | |
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| Ground-Water Flow to Wells | |
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| Introduction | |
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| Basic Assumptions | |
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| Radial Flow | |
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| Computing Drawdown Caused by a Pumping Well | |
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| Determining Aquifer Parameters from Time-Drawdown Data | |
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| Slug Tests | |
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| Estimating Aquifer Transmissivity from Specific Capacity Data | |
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| Intersecting Pumping Cones and Well Interference | |
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| Effect of Hydrogeologic Boundaries | |
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| Aquifer-Test Design | |
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| Soil Moisture and Ground-Water Recharge | |
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| Introduction | |
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| Porosity and Water Content of Soil | |
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| Capillarity and the Capillary Fringe | |
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| Pore-Water Tension in the Vadose Zone | |
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| Soil Water | |
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| Theory of Unsaturated Flow | |
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| Water-Table Recharge | |
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| Regional Ground-Water Flow | |
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| Introduction | |
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| Steady Regional Ground-Water Flow in Unconfined Aquifers | |
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| Transient Flow in Regional Ground-Water Systems | |
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| Noncyclical Ground Water | |
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| Springs | |
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| Geology of Regional Flow Systems | |
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| Interactions of Ground Water and Lakes or Wetlands and Streams | |
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| Geology of Ground-Water Occurrence | |
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| Introduction | |
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| Unconsolidated Aquifers | |
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| Lithified Sedimentary Rocks | |
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| Igneous and Metamorphic Rocks | |
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| Ground Water in Permafrost Regions | |
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| Ground Water in Desert Areas | |
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| Coastal-Plain Aquifers | |
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| Fresh-Water-Saline-Water Relations | |
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| Tidal Effects | |
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| Ground-Water Regions of the United States | |
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| Water Chemistry | |
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| Introduction | |
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| Units of Measurement | |
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| Types of Chemical Reactions in Water | |
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| Law of Mass Action | |
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| Common-Ion Effect | |
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| Chemical Activities | |
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| Ionization Constant of Water and Weak Acids | |
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| Carbonate Equilibrium | |
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| Thermodynamic Relationships | |
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| Oxidation Potential | |
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| Ion Exchange | |
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| Isotope Hydrology | |
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| Major Ion Chemistry | |
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| Presentation of Results of Chemical Analyses | |
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| Water Quality and Ground-Water Contamination | |
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| Introduction | |
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| Water-Quality Standards | |
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| Collection of Water Samples | |
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| Grou | |