Roles, Responsibilities, and Paradigms: The Journey of a Dam Safety Program-Video

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The Tennessee Valley Authority (TVA) was created in 1933 to improve life in the Tennessee Valley through affordable power, environmental stewardship, and economic development. Its dam safety mission is to protect lives and property.<br /><br />The speaker described how the 2008 Kingston coal-ash spill prompted TVA to overhaul its previously reactive dam safety program. TVA added internal oversight, consolidated dam safety functions, adopted risk-based assessments, and rebuilt expertise.<br /><br />That transformation was tested at Boone Dam, where a sinkhole and sediment discharge raised concerns about internal erosion through karst foundations. TVA lowered the reservoir, investigated the foundation, and installed grout curtains before constructing a concrete cutoff wall. During grouting, the dam moved and fractured, so work was adjusted and stability berms were built.<br /><br />For the cutoff-wall project, TVA became engineer of record, streamlined communication, clarified responsibilities, and took on more risk. The speaker emphasized trust, open communication, proactive conflict resolution, and clear understanding of stakeholder commitments and project milestones.<br /><br />The repair was completed three weeks early and $130 million under budget, with no significant safety incidents across more than two million work hours. The project strengthened the dam and demonstrated the value of collaborative, risk-informed dam safety management.

Keywords

Tennessee Valley Authority

dam safety

Kingston coal-ash spill

Boone Dam

internal erosion

karst foundations

risk-based assessment

cutoff wall