Browsing by Author "Bangu, Tekle"

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    Implication Of Spring Spatial Discharge Variation On Groundwater Hydrology In Kulfo River Catchment, Arba Minch, Southern Ethiopia
    (2018-05-01) Bangu, Tekle; Azagegn, Tilahun ( Dr.)
    Mostly Water Supply For Utilize Purposes Is From Underground Storage Systems Which Would Be Conceptualized By Geology, Structures, Topographic Set Up, Land Caver And Surface Drainage. In This Study, The Assessment Of Groundwater Occurrence, Flow And Distribution With Respect To Perennial Springs Discharge Has Been Made. Thus, The Main Objective Of Current Study Is To Characterize And Assess Implication Of Springs Spatial Discharge Variation On Groundwater Hydrology In Kulfo River Basin By Using Combined Approaches Of Field Study, Dem And Satellite Imageries, Geologic Cross-Section, Springs Discharge Evaluation And Hydrochemical Analysis. Hence, Perennial Springs Located On The Surface Geologic Environment Are Good Indicators Of Water Placed Underground. For This Reason, The Controlling Factors That Have Role In Spring’s Emergence And Made Variant Discharge In The Kulfo River Basin Are Identified. Springs In The Area Are Connected Dynamically With The Groundwater Directly Through Fractures And Tectonic Fault Line. Consequently, The Fault Systems Are Very Important On The Occurrence And Circulation Of Groundwater. It Produces Water Natural Over Flow On The Surface By Help Of Artesian Pressure. Distribution Of Springs Along Fault Line Indicates Major Faults Are Strong Factors That Control Occurrence, Distribution And Flow Of Groundwater. Faults Can Act As Conduit And Storage Medium Or They Can Act As Barrier. Nature Of Geological Formation Is A Factor That Can Be Considered Next To Fault Structures To Control Groundwater Dynamics. Thus, Amount Of Springs Discharge Can Be Increase From Older To Younger Lithology While Its Distribution Is Reversely Associated Older To Younger. Topographic Variation Is Also Responsible For The Variation Of Spring Discharge. Integration Of The Factors Mentioned Above Is Responsible For Spatial Spring Discharge Variation And Groundwater Occurrence In The River Basin. Hydrochemical Characteristics Such Tds, Ec, Ph, Temperature, Major Cation And Anion Analysis Could Be Measured At Field And Tested In Laboratory. Their Dominance Is Increasing From Upper To Lower Rift Floor. Combining This Evidence, Springs Discharge Chemistry Is One Of The Best Indications Of Groundwater Flow Direction, Aquifer Geology, Residence Time From Recharge Area To Discharge One In The Catchment.