1. The document compares slope stability analysis of the Aydoghmoosh Earth Dam in Iran using limit equilibrium methods, finite element analysis, and finite difference methods. 2. Safety factors calculated using the simplified Bishop method and finite element analysis were similar at 1.494 and 1.596, respectively. 3. The finite difference method produced a safety factor of 1.79, around 12% higher than the finite element method. This is because the finite element method accounts for elasticity modulus in its calculations.