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Addis Ababa University Libraries Electronic Thesis and Dissertations: AAU-ETD! >
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Thesis - Anaesthesiology >
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http://hdl.handle.net/123456789/264
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| Title: | ASSESSMENTS OF GROUNDWATER AND ITS VULNERABILITY TO POLLUTION BY VERTICAL ELECTRICAL SOUNDING IN ADA’A PLAIN |
| Authors: | TESFAYE, SHEWA |
| Advisors: | Dr. Shimelis Fissiha |
| Copyright: | 2007 |
| Date Added: | 16-Nov-2007 |
| Publisher: | Addis Ababa University |
| Abstract: | The purpose of this study was to locate the possible water bearing horizons for
ground water development by using the Vertical electrical sounding (VES)
methods and assess the Groundwater vulnerability to pollution by aquifer
vulnerability index (AVI) using resistivity result. The sample was taken from
Ada’a plain. Ada’a plain is falls within in the upper part of Awash River Basin.
It is located at the central parts of Ethiopia, in Oromia Regional State. It has an
Elevation of 1600 and 1900 masl and approximately lies between latitudes 8
030’N and 8 0 45’N 38050'E and 39015'E. The results of data analysis indicate
that at grater pseudo-depth along NNE-SSW margin of the study area has low
resistivity values. The area favorable for ground water production is that
characterized by low resistivity values i.e. the weathered layer and fractured
zone have been identified as an aquifer. Parameters affecting vulnerability to
pollution are mainly permeability and thickness of each protective layer. Aquifer
vulenarabilty Index (AVI) which provides low, moderate and high classification
ranges for expected protective layers, which can be deduced from indirect
resistivity methods. The results of AVI values have shown that most Stations are
the most vulnerable to pollution while Stations 48, 71, and 81 are the least
Vulnerable to pollution.
Therefore it can be recommended that ground water developers can use those
specific localities to construct wells to tap ground water for the local people as
well as the surrounding areas. It also recommended that careful should be taken
when sitting any agricultural and other waste components for better
safeguarding the groundwater resources. |
| Description: | A Thesis Presented To The School Of Graduate Studies Of The Addis Ababa
University In Partial Fulfillment Of The Requirements For The Degree Of Master
Of Science In Environmental Science |
| URI: | http://hdl.handle.net/123456789/264 |
| Appears in: | Thesis - Environmental Sciences
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