Construction of the three dams was completed in 1999, requiring the excavation of 31,000,000 cubic metres (41,000,000 cu yd) of foundation material.
The earth fill dam project required about 110,000,000 cubic yards (84,000,000 m³) of sand, clay and rock.
Much of the materials needed were obtained from the project area.
Core materials were obtained from the silty and clayey sandy alluvium in the floor of the reservoir and the rock fill came from the bedrock highlands of the reservoir's south rim.
Design and construction of the dams took into consideration the threat of earthquakes with the San Jacinto Fault Zone, located about underneath 0 miles (0 km) from the reservoir, and the San Andreas Fault, located about 19 miles (31 km) from the reservoir.
Construction of the three dams was completed in 1999, requiring the excavation of 31,000,000 cubic metres (41,000,000 cu yd) of foundation material. The earth fill dam project required about 110,000,000 cubic yards (84,000,000 m³) of sand, clay and rock. Much of the materials needed were obtained from the project area. Core materials were obtained from the silty and clayey sandy alluvium in the floor of the reservoir and the rock fill came from the bedrock highlands of the reservoir's south rim. Design and construction of the dams took into consideration the threat of earthquakes with the San Jacinto Fault Zone, located about underneath 0 miles (0 km) from the reservoir, and the San Andreas Fault, located about 19 miles (31 km) from the reservoir.
Diamond Valley Lake