نتایج جستجو برای: net recharge

تعداد نتایج: 102886  

2014
Felix Oteng Mensah Clement Alo Sandow Mark Yidana

This study tests the representativeness of groundwater recharge estimates through the chloride mass balance (CMB) method in a tropical environment. The representativeness of recharge estimates using this methodology is tested using evaporation estimates from isotope data, the general spatial distribution of the potential field, and the topographical variations in the area. This study suggests t...

2018
Noam Zach Dvory Alon Ronen Yakov Livshitz Eilon Adar Michael Kuznetsov Alexander Yakirevich

Sustainable groundwater production from karst aquifers is primarily dictated by its recharge rate. Therefore, it is essential to accurately quantify annual groundwater recharge in order to limit overexploitation and to evaluate artificial methods for groundwater enrichment. Infiltration during erratic flood events in karst basins may substantially contribute to aquifer recharge. However, the co...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2013
David R Steward Paul J Bruss Xiaoying Yang Scott A Staggenborg Stephen M Welch Michael D Apley

Groundwater provides a reliable tap to sustain agricultural production, yet persistent aquifer depletion threatens future sustainability. The High Plains Aquifer supplies 30% of the nation's irrigated groundwater, and the Kansas portion supports the congressional district with the highest market value for agriculture in the nation. We project groundwater declines to assess when the study area m...

2012
KISHAN SINGH RAWAT ANIL KUMAR MISHRA GEORGE PAUL RAKESH KUMAR

The present research work was undertaken to estimate the ground water recharge in Shankergarh block, Allahabad (India) during the year 2008. The data set used consisted of satellite derived rainfall and actual evapotranspiration and SCS-CN model estimated runoff values. The monthly values of the different components of water balance equation were estimated and subsequently the ground water rech...

Hassan Vagharfard Mostafa Moradi Dashtpagerd,

Artificial recharge can be an effective method to raise the groundwater table and to resolve the groundwater crisis in Sefid dasht plain. The most important step to successful accomplishment of artificial recharge is locating suitable areas for artificial recharge. Hence this research carried out with purpose of determining suitable areas for artificial recharge in Sefid dasht plain. Slope, sur...

A. Malekian B. Motamedvaziri Gh. Ashtiani M. Mahdavi

Water is the main option of any development, so having an accurate management of groundwater is necessary. This study has been done in Damghan sedimentary plain in Iran, which is located in northwest of Semnan Province. The main objective of this research was to estimate the rate and right site of recharge in Damghan plain to prevent the aquifer from decreasing the water table. For this purpose...

Journal: :مرتع و آبخیزداری 0
فرود شریفی عضو هیأت علمی پژوهشکده حفاظت خاک و آبخیزداری کشور، ایران

this paper has focused on the application of hydro- geochemical techniques in conceptualizing of groundwater and to estimate recharge/discharge and the renewability of aquifer in hashtgerd watershed, iran. at first, the aquifer boundary was defined based on data of existing wells and basin morphologic conditions. estimation of recharge rate at different depth intervals by using tracer mass bala...

Hassan Vaqharfard Mostafa Moradi Dashtpagerdi,

The water crisis is harmful effects on human life. Also one of the most problems in the human society is water resources management. In this study, site selection of most suitable areas for artificial recharge using Boolean model. Criteria used to select the most suitable area for artificial recharge included: infiltration, slope, aquifer thickness, aquifer quality.  The layers were produced an...

over-exploitation of groundwater resources in Chaharmahal va Bakhtiari province led to prohibition of some plains in this province. One of these plains is Sefiddasht aquifer. Artificial recharge can be an effective method to raise the groundwater table and resolve the groundwater crisis in this province. The most important step for successful accomplishment of artificial recharge is locating su...

2014
A. M. Ireson S. A. Mathias H. S. Wheater A. P. Butler J. Finch

Groundwater from unconfined chalk aquifers constitutes a major water resource in the UK. The unsaturated zone in such systems plays a crucial role in the hydrological cycle, determining the timing and magnitude of recharge, and the transport and fate of nutrients. However, despite more than three decades of study, our physical understanding of this system is incomplete. In this research, state ...

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