1-Adequacy of Seepage Analysis in Core Section of the Earthen Dam with Different Mix Proportions (2015) Abstract Earthen dams are built since early days of civilization. These dams constitute to be the most common type, because it is generally built of locally available materials which derive strength from their position, friction and cohesion. Many earth fill dams are vulnerable to failures due to seepage problems that take place in the core since all soils are pervious to a smaller or larger ...