I read as much as I could find. The Dam itself is structurally fine as any Dam can be. They got the rating by the population below the Dam and it will never change so the rating will be the same forever.
Truman Dam, which stands between Truman Lake and Lake of the Ozarks, has been categorized as a potentially unsafe dam, in a risk assessment study conducted in 2018 by the Army Corps of Engineers.
The Harry S. Truman Dam received the assignment of a Dam Safety Action Class (DSAC) 2 Rating. According to the Corps of Engineers, a DSAC 2 Rating is Urgent (Unsafe or Potentially Unsafe) and is characterized as “Failure Initiation Foreseen or Very High Risk.”
According to Harry S. Truman Dam Safety Program Manager Pendo Duku, that rating is a general assessment based on specific concerns. In the case of Truman Dam, the high population numbers downstream and the potential for an extreme rain event are the primary concerns. "Population is greatest concern to us," Duku said.
oneshot