Groundwater Quantity And Quality

This book is a printed edition of the Special Issue "Groundwater Quantity and Quality" that was published in Resources

"Sponsored by Groundwater Management Technical Committee of the Groundwater Council of EWRI, Environmental and Water Resources Institute (EWRI) of the American Society of Civil Engineers."

The focal point of this symposium on groundwater is the impact of human activity on groundwater quantity and quality. Further topics are : the influence of hydrological parameters on direction and extent of transport of chemical pollutants to groundwater; the changes of quantity and quality of groundwater; groundwater quality parameters as indicator of groundwater flow

Recoge: 1.Introduction - 2.Driving forces - 3.Pressures on groundwater quality - 4.Pressures on groundwater quantity - 5.Status of groundwater quality - 6.Status of groundwater quantity - 7.Policy measures and instruments.

Groundwater constitutes an important component of many water resource systems, supplying water for domestic use, for industry, and for agriculture. Management of a groundwater system, an aquifer, or a system of aquifers, means making such decisions as to the total quantity of water to be withdrawn annually, the location of wells for pumping and for artificial recharge and their rates, and control conditions at aquifer boundaries. Not less important are decisions related to groundwater qUality. In fact, the quantity and quality problems cannot be separated. In many parts of the world, with the increased withdrawal of ground water, often beyond permissible limits, the quality of groundwater has been continuously deteriorating, causing much concern to both suppliers and users. In recent years, in addition to general groundwater quality aspects, public attention has been focused on groundwater contamination by hazardous industrial wastes, by leachate from landfills, by oil spills, and by agricultural activities such as the use of fertilizers, pesticides, and herbicides, and by radioactive waste in repositories located in deep geological formations, to mention some of the most acute contamination sources. In all these cases, management means making decisions to achieve goals without violating specified constraints. In order to enable the planner, or the decision maker, to compare alternative modes of action and to ensure that the constraints are not violated, a tool is needed that will provide information about the response of the system (the aquifer) to various alternatives.

This edition of its popular predecessor has been significantly revised to increase flexibility in the presentation and maintain greater continuity of the material. Combining both theory and practical applications of empirical equations the text contains expanded treatment of water quantity and quality control, a detailed presentation of basic principles and use in analysis and design, hydrograph topics including synthetic and convolution techniques, practical and realistic case studies relating to design problems, and additional end-of-chapter problems. It provides new computer programs to explain complex concepts and solve large data-based problems. An additional appendix offers suggestions for classroom or lab problems.