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Ees401:Hydrogeology Question Paper

Ees401:Hydrogeology 

Course:Hydrogeology

Institution: University Of Eldoret question papers

Exam Year:2013



Answer all questions
1.a)Define the term specific yield (2marks)
b)An unconfined aquifer has an areal extent of 15km2.When 9.5 million m3 of water was pumped out,the water table was observed to go down by 2.4m.What is the specific yield of the aquifer in %?(3marks)
c)Describe briefly each of the following methods of recharge
i)Injection wells (5marks)
ii)Stream channel modification (5marks)
2.a)Define the term safe yield (2marks)
b)During a recuperation test conducted on an open well in a region,the water level in the well was depressed by 4.5m and it was observed to rise by 2.5m in 30minutes.What is the specific capacity of the open well in that region?(3marks)
c)Explain briefly how each of the following causes groundwater pollution:
i)Land fills (5marks)
ii)Sewer systems(5marks)




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