The seepage flow analysis of main dam stability in Way Sekampung dam development project

Analysis using depression line method was conducted in two conditions, at normal water level (± 124 m) with a result of 1.11 × 10-3 m3/s and flood ± 126.5 m 1.33 m3/s. Capacity shows (< 1%) the average enters reservoir, making it safe from danger distress. Safety calculations for pipping showed bigger value than filtration flow speed indication 4,638 ( > 4) which means that dam will not make symptoms. on slope slice without entering seismic coefficient obtained number all loading conditions analysis by adding get except elevation is SF 1.05 1.05.