|
Journal of Environmental Hydrology
ISSN 1058-3912 |
||
|
Electronic Journal of the International Association for
Environmental Hydrology
JEH Volume 17 (2009), Paper 28 Posted October 23, 2009 A TWO-DIMENSIONAL ELECTRICAL RESISTIVITY IMAGING OF AN EARTH DAM, ZARIA, NIGERIA
I.B. Osazuwa1 2Dept. of Physics, Adamawa State University, Mubi, Nigeria ABSTRACT A 2D electrical resistivity survey was carried out at the Ahmadu Bello University (A.B.U.) farm dam in order to identify and characterize possible seepage paths within the dam and its foundation. A three hundred meter long profile spanning the entire axis of the dam was obtained on the crest of the homogeneous earth dam. On the basis of analysis of the data, three zones of relatively uniform resistivity were identified and mapped. Portions within a layer of anomalous low resistivity are interpreted to represent weak zones within the embankment favoring seepage. Also the foundation of the dam shows evidence of intense weathering and is suspected to also provide a seepage path for water from the reservoir. Reference: Osazuwa, I.B., and C.E. Chii. 2009. A two-dimensional electrical resistivity imaging of an earth dam, Zaria, Nigeria. Journal of Environmental Hydrology, Vol. 17, Paper 28. CONTACT: Chii E. Chii Dept. of Physics Adamawa State University Mubi, Nigeria E-mail: chiiemma@gmail.com |
||
|
Return to JEH 2009 Papers
Return to HydroWeb Homepage |
||