. The conservation of ground water; a survey of the present ground-water situation in the United States. Groundwater; Water-supply; Water conservation. CONTENTS. Foreword by Fairfield Osborn vii Preface xi I. Introduction 1 The Problems 3 Our Increasing Requirements for Water 10 The Need to Know What We Are Doing 10 II. Hydrologic Principles and Basic Data 15 The Hydrologic Cycle 15 Inventory of Our Water Resources 18 The gross water supply: precipitation 20 The surplus: stream flow 21 The return to the atmosphere: evapotranspiration 21 Delineation of Arid and Humid Regions 25 Nature's Great R
. The conservation of ground water; a survey of the present ground-water situation in the United States. Groundwater; Water-supply; Water conservation. CONTENTS. Foreword by Fairfield Osborn vii Preface xi I. Introduction 1 The Problems 3 Our Increasing Requirements for Water 10 The Need to Know What We Are Doing 10 II. Hydrologic Principles and Basic Data 15 The Hydrologic Cycle 15 Inventory of Our Water Resources 18 The gross water supply: precipitation 20 The surplus: stream flow 21 The return to the atmosphere: evapotranspiration 21 Delineation of Arid and Humid Regions 25 Nature's Great Reservoirs: Ground Water 27 Delineation of ground-water reservoirs of the United States 29 Changes of storage in a ground-water reservoir 32 III. Problems Resulting from Ground-water Develop- ment and Use 35 Reservoir Problems 36 Reservoirs with natural replenishment inadequate for current uses 36 Perennial overdraft and emptying reservoirs, 37; The com- plication of introducing unusable water, 51; Corrective meas- ures to reduce overdraft, 60. Reservoirs with natural replenishment adequate for present uses 77 Problems of maximum sustained development 92 Pipeline Problems 98 Dispersed development remote from recharge areas 101 Concentrated draft from a part of a reservoir 109 The danger of drawing unusable water into a reser- voir 123 UM. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Thomas, H. E. (Harold Edgar), 1906-. New York, McGraw-Hill
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Keywords: ., bookcentury1900, booksubjectgroundwater, booksubjectwatersupply
