Page 9 - jdrogers2017ab

Landslide-
induced seich

• Around 11:57-1/2 PM a massive landslide of the dam’s eastern

abutment initiated, severing the SCE 70 Kv Lancaster power lines.

• The entirety of the dam’s left abutment was carried across the

downstream face of the main dam.

• A landslide-driven displacement wave washed flotsam 4 ft above the

reservoir high water line, 3/4 mile to the north