Columbia-Pacific Northwest Region

Dam Safety Process and Schedule

Project Timeline:

• Current Step: Final Design
• Final Design Complete: 2026
• Bid Process: 2027
• Construction Start (Notice to Proceed): 2027
• Construction Substantially Complete: 2031
• End of Post Construction Activities: 2033

Dam safety milestone definitions:

Pre-design: The process of evaluating and analyzing alternatives.

Final design: The engineering preferred alternative is prepared for solicitation, bid and construction. Any environmental impacts will be evaluated and the authorization to expend funds will be obtained.

Bid process: The process of selecting a contractor.

Construction: Construction of the preferred alternative.

Post construction: The process ensuring the construction was completed as designed and the modifications decreased the potential risk to the dam as compared to pre-modification.