scholarly journals Hydrogeological and hydrogeochemical investigation of a Precambrian basement aquifer in Bugesera Region (Burundi)

Afrika Focus ◽  
2012 ◽  
Vol 25 (2) ◽  
Author(s):  
Charles Bakundukize
Keyword(s):  
Drinking Water ◽  
Groundwater Level ◽  
Discharge Rate ◽  
Groundwater Potential ◽  
Hydraulic Parameters ◽  
Precambrian Basement ◽  
Level Fluctuation ◽  
Level Variation ◽  
Groundwater Level Variation ◽  
Geophysical Investigations

This study clearly shows that Bugesera region has genuine groundwater potential which could be circumscribed and tapped in order to provide enough drinking water to the inhabitants of the area. Thus, this study recommends further investigations and measures, including, geophysical investigations coupled to reconnaissance drillings, the installation of a network of piezometers to monitor the groundwater level variation, measurement of the discharge rate and water level fluctuation in the complex of marshlands and lakes, monitoring of groundwater quality and further pumping tests in order to rfine the distribution of hydraulic parameters in the study area. 

scholarly journals Classification of Groundwater Level Variation Types Near the Excavated Area of the Temporary Gulpocheon Discharge Channel

2014 ◽  
Vol 24 (4) ◽  
pp. 631-641
Author(s):  
Chang-Hoon Kim ◽  
Su-Gon Lee ◽  
Jeong-Sang Hahn ◽  
Nam-Ju Kim ◽  
Byeong-Chu Jeon
Keyword(s):  
Groundwater Level ◽  
Discharge Channel ◽  
Level Variation ◽  
Groundwater Level Variation

scholarly journals Numerical modeling of the effects of pumping on tide-induced groundwater level fluctuation and on the accuracy of the aquifer's hydraulic parameters estimated via tidal method: a case study in Donghai Island, China

2017 ◽  
Vol 19 (4) ◽  
pp. 607-619 ◽  
Author(s):  
Pengpeng Zhou ◽  
Xiaojuan Qiao ◽  
Xiaolei Li
Keyword(s):  
Numerical Modeling ◽  
Groundwater Level ◽  
Hydraulic Parameters ◽  
Quasi Steady State ◽  
Level Fluctuation ◽  
Observation Well ◽  
Full Penetration ◽  
Estimated Parameters ◽  
Groundwater Level Fluctuation

Coastal groundwater level is affected both by tide and pumping. This paper presents a numerical model to study the effects of pumping on tide-induced groundwater level fluctuation and on accuracy of hydraulic parameters estimated via tidal method. Firstly, for the effects of pumping on the groundwater level fluctuation under the combined influence of pumping and tide, groundwater level has a drawdown but eventually reaches a quasi-steady-state again. Steady pumping can attenuate the amplitude but cannot affect the phase of the quasi-steady fluctuation. However, seaward steady pumping plays a relatively obvious role in enhancing drawdown compared with landward pumping, a partial penetration well leads to greater drawdown than a full penetration well, and transient pumping induces large amplitude which does not reflect large transmissivity. Secondly, for the effects of pumping on the accuracy of the parameter estimated via the tidal method, transient pumping or large steady pumping, especially in a full penetration well, significantly affects accuracy of the estimated parameters. However, when the distance between the pumping well and tide observation well exceeds 200% of the distance between observation well and shoreline, pumping effect on estimated parameters can be neglected. The conclusions could provide guidance for reasonable application of the tidal method.

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