Geosciences 2016, 6, 20 12 of 20 covers, such as extensive erosion surfaces (peneplains). Therefore, a careful and accurate comparison with the geologic and geomorphologic conditions in the investigation area is necessary. The reservoir area is characterized by estimated Vs 30 **data** ranging between 600 and 760 m/s. The dam site area is obviously not affected by higher susceptibility to soil amplification, as in the case of lower Vs 30 velocities (<400 m/s) within broader valleys and depressions.