Corps announces work in critical areas likely finished in 2010
The most critical section of the wall at Wolf Creek Dam will
be completed by October 2010, the US Army Corps of Engineers Nashville District
announced this week.
“We conducted a detailed analysis of risk factors that
impact construction schedule,” stated Lt. Col. Lindstrom, Nashville District
Commander. “The analysis clearly demonstrates we could optimistically complete
the work in Critical Area 1 by the summer of 2010; however, risks to
construction such as drilling rates and hydromill performance will most likely drive
the completion of this part of the dam until October 2010.”
Completion of Critical Area 1 (the section where the earthen
embankment meets the concrete dam) is important because it will increase the
safety of the dam structure that mitigates most of the flood risk to
Burkesville, Celina, Carthage, and Nashville, among other
The Corps reports they will also be able to implement the
pool level decision-making process that could lead to an incremental increase
above current levels once the wall is completed in Critical Area 1.
Increasing the pool level will benefit hydropower, water
supply, water quality, recreation and navigation for the entire Cumberland
The Corps said they announced in October 2007 that lake
level considerations at WolfCreek would be based on
completion of structural remedial measures and validated by performance
indicators and continued stability and improvement in the project. Performance
is based on instrumentation data, observation, and verification drilling and
testing results. This decision-making process prioritizes dam safety.
Prior expectation was that installation of the concrete
barrier wall would be completed in Critical Area 1 by April 2010.
Completion of this milestone would have allowed the Corps to
apply its pool level decision-making process at that time. While the Corps is revising
the completion schedule for Critical Area 1, there are no significant changes
to the foundation itself.
“Every time we drill into the foundation at Wolf Creek Dam,
we learn more about the condition of the limestone hundreds of feet
underground,” said David Hendrix, the Corps’ Project Manager. “The information
we gather improves our understanding of the foundation and how we address the
seepage problem at the dam.”
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