One of the important points in the study stages and along the performance works for the earth dams construction is seepage analysis through foundation and dam body, which is a serious problem for dam designers. So calculation of seepage amount from foundation and dam body and evaluation of control or decrease methods for this problem is essential. Seepage analysis is based on a residual flow scheme involving saturated and unsaturated zones in which the major mesh remains invariant during transient flow. Solution of any seepage problem is reduced to a standard simple routine requiring negligible engineering time. Seepage control is necessary to prevent excessive uplift pressures, sloughing of the downstream slope, piping through the embankment and foundation, and erosion of material by loss into open joints in the foundation and abutments. The under construction Shurijeh dam project is located about 125 km south east of Mashhad, Iran on the Kashafrud River. The 2-D seepage analysis was conducted using computer software, Seep/W, to determine seepage quantities. Results are shown for two conditions: with and without cutoff within the dam foundation.

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