Fault rupture propagation through homogeneous and zoned earth dams under steady state seepage is modeled numerically.

The angle of rupture paths near the soil surface corresponds to failure theories in passive and active states.

Reverse faults induce higher pore water pressures compared to normal faults.

The mixed clayey materials compared with the clayey soils exhibit comparatively higher fault-induced pore water pressures.

Some rupture paths increase the possibility of water leakage through the dam and pose a serious threat to the dam safety.