Ross Dam is a 540-foot (160 m)-high, 1,300-foot (400 m)-long concrete thin arch dam across the Skagit River, forming Ross Lake. The dam is in Washington state, while Ross Lake extends 23 miles (37 km) north to British Columbia, Canada.

This video is in color but with no sound. All phases of construction for Ross Dam with captions separating segments. Item 21,
Record Series 1204-05, Seattle Municipal Archives