Numerical Investigation of Long-Term Settlement of Waba Dam

Waba Dam is a zoned earth fill structure that was constructed on a deep soft, sensitive marine clay layer. This marine clay layer is characterized by its low shear strength and a large void ratio. During the last 32 years, the dam and its foundation has settled over 1.5 m (5 ft). Piezometric readings indicated that the excess pore water pressure in the foundation has not yet fully dissipated.