Evaluation and rehabilitation of dam seepage problems. A case study: Kafrein dam

The intention of this study is to locate the probable sources of the Kafrei n dam seepage problem. A methodology known as excitation-response analysis will be considered. Analytical expressions, depicting the groundwater level response in the underlying aquifer as a result of changes in the reservoir water level, were derived from a linearized groundwater flow equation for one-dimensional semi-infinite, isotropic and homogeneous porous media. The results revealed that a large proportion of the seepage water originates fr om a site at a distance about 1 km from the observation point M1 and stream lines along the existing faults. Emphasis in this work was also placed on c ontroling and mitigating the seepage problem. (C) 2000 Elsevier Science B.V . All rights reserved.