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- The total space occupied by the materials forming the dam structure computed between abutments and from the top to the bottom of the dam. No deduction is made for small openings such as galleries, adits, tunnels, and operating chambers within the dam structure. Portions of power plants, locks, spillway, etc., may be included only if they are necessary for the structural stability of the dam.
Bureau of Reclamation - Cite This Source - This Definition
- Abutment, Adit, Drainage curtain, Gallery, Left abutment, Right abutment, Volume of Concrete