U.S Army Corps of Engineers: Garrison Dam has "unacceptable risks" related to safety

Courtesy: U.S Army Corp of Engineers
Courtesy: U.S Army Corp of Engineers

(Bismarck, ND) -- Officials at the Garrison Dam are seeking public feedback regarding potential safety risks at the facility.

The U.S Army Corps of Engineers is seeking public comment for a public assessment related to "unacceptable dam safety risks" at the Garrison Dam. In a release from the U.S Army Corps of Engineers, the study found six "risk driving Potential Failure Modes" that could result in "significant consequences that would result from a spillway failure." Officials say changes are needed because of the possibility of "widespread, long-lasting, and catastrophic consequences impacting 11 states and approximately 2,000 river miles... extending from North Dakota to Mississippi". 

The safety risks include spillway deficiencies through the dam's drainage system, which the study says was found in controlled flood releases in 2011. This included dislodged manhole covers in the spillway chute. If left unchecked, the report asserts cracking and fracturing of the the drainage system could occur and lead to other possible life safety risks. 

There is a 30-day period of time to review and comment. You can read the Garrison Dam Draft Environmental Assessment study and send feedback by clicking here