The structural volume of a dam is the total space occupied by the materials forming the dam structure computed between abutments and from top to bottom of dam. The abutment refers to the part of the valley side against which the dam is constructed.
More on Largest Dam in Canada:
Located in Canada, Gardiner Dam is a 64-meter tall dam with a structural volume of 65.40 million m3. Completed in 1967, Gardiner Dam can hold up to 9.40 billion m3 of water and has an installed capacity of 186MW.