Author: Ettienne Van WykPublisher:
ISBN:
Category : Aquifer storage recovery
Languages : en
Pages : 273
Book Description
Estimation of Episodic Groundwater Recharge in Semi-arid Fractured Hard Rock Aquifers
Author: Ettienne Van WykPublisher:
ISBN:
Category : Aquifer storage recovery
Languages : en
Pages : 273
Book Description
Water Resources of Hard Rock Aquifers in Arid and Semi-arid Zones
Author: J. W. LloydPublisher: Unesco
ISBN:
Category : Nature
Languages : en
Pages : 296
Book Description
Hard rocks have a strong influence upon the hydrological cycle and their poor ability to transmit, store and yield groundwater may impose constraints upon socio-economic development. This book deals with the new methodologies and the means of exploiting groundwater resources in hard rocks: exploration and well-location, well-building methods, borehole and dug-well designs, methods for the analysis of pumping test data. Case-studies are included.
Estimation of Natural Groundwater Recharge
Author: I. SimmersPublisher: Springer Science & Business Media
ISBN: 9401577803
Category : Science
Languages : en
Pages : 503
Book Description
In view of the rapidly expanding urban, industrial and agri cultural water requirements in many areas and the normally associated critical unreliability of surface water supplies in arid and semi-arid zones, groundwater exploration and use is of fundamental importance for logical economic development. Two interrelated facets should be evident in all such groundwater projects : (a) definition of groundwater recharge mechanisms and characteristics for identified geological formations, in order to determine whether exploitation in the long-term involves 'mining' of an es sentially 'fossil' resource or withdrawal from a dynamic supply. A solution to this aspect is essential for development of a re source management policy: (b) determination of recharge variability in time and space to thus enable determination of total aquifer input and to quantify such practical aspects as 'minimum risk' waste disposal locations and artificial recharge potential via (e.g.) devegetation or engi neering works. However, current international developments relating to natural recharge indicate the following 'problems' ; no single comprehensive estimation technique can yet be iden tified from the spectrum of methods available; all are reported to give suspect results.
Recharge of Phreatic Aquifers in (Semi-)Arid Areas
Author: Ian SimmersPublisher: Routledge
ISBN: 1351419579
Category : Technology & Engineering
Languages : en
Pages : 240
Book Description
Groundwater use is of fundamental importance to meet the rapidly expanding urban, industrial and agricultural water requirements in (semi) arid areas. Quantifying the current rate of groundwater recharge and define its variability in space and time are thus prerequesites for efficient groundwater resource managment in these regions, where such resources are often the key to economic development. Attention focuses on recharge of phreatic aquifers, often the most readily-available and affordable source of water in (semi) arid regions. These aquifers are also the most susceptible to contamination, with the recharge rate determining their level of vulnerability. (Semi) arid zone recharge can be highly variable, the greater the aridity, the smaller and potentially more variable the natural flux. Its determination is an iterative process, involving progressive data collection and resource evaluation; there is also a need to use more than one technique to verify results. Direct, localised and indirect recharge mechanisms from a spectrum of known sources are addressed in the framework of recharge from precipitation, intermittant flow and permanent water bodies. The approach taken for each of these reflects the nature and current understanding of the processes involved. The volume also reviews current recharge estimation challenges, outlines recent developments and offers guidance for potential solutions.
Groundwater Recharge Estimation in a Fractured and Semi-arid Environment
Author: K. KeetileA Survey of Methods for Analysing Groundwater Recharge in Arid and Semi-arid Regions
Author: Groundwater in Fractured Rocks
Author: Jirí KrásnýPublisher: CRC Press
ISBN: 1134122187
Category : Science
Languages : en
Pages : 1034
Book Description
The hydrogeologic environment of fractured rocks represents vital natural systems, examples of which occur on every continent. This book discusses key issues, methodologies and techniques in the hydrogeology of fractured rocks, summarizing recent progress and anticipating the outcome of future investigations. Forty-four revised and updated papers w
Ground-water Recharge to the Regolith-fractured Crystalline Rock Aquifer System, Orange County, North Carolina
Author: Charles C. DanielPublisher:
ISBN:
Category : Aquifers
Languages : en
Pages : 72
Book Description
Estimation of Natural Groundwater Recharge
Author: I. SimmersPublisher:
ISBN: 9789401577816
Category :
Languages : en
Pages : 530
Book Description
Evaluation of Methods for Estimation of Aquifer Recharge from Precipitation on Semi-arid Lands
Author: Gary S. JohnsonPublisher:
ISBN:
Category : Aquifers
Languages : en
Pages : 62
Book Description