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Multiple Select QuestionSelect all that applyHow does sedimentation limit the life of the reservoir behind a dam?Multiple select question.Sediment loads create a berm allowing for more water to be trapped.Sediment loads fill in the reservoir, reducing the amount of water that can be stored.Sediment loads block the ports for water used in hydroelectric power generation.Need help? Review these concept resources.

Question

Multiple Select QuestionSelect all that applyHow does sedimentation limit the life of the reservoir behind a dam?Multiple select question.Sediment loads create a berm allowing for more water to be trapped.Sediment loads fill in the reservoir, reducing the amount of water that can be stored.Sediment loads block the ports for water used in hydroelectric power generation.Need help? Review these concept resources.

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Solution

The ways in which sedimentation can limit the life of the reservoir behind a dam include:

  1. Sediment loads fill in the reservoir, reducing the amount of water that can be stored. This is because as sediment accumulates, it takes up space that was previously occupied by water, thus reducing the reservoir's capacity.

  2. Sediment loads block the ports for water used in hydroelectric power generation. If the ports through which water flows to generate power get blocked by sediment, the dam can't produce electricity efficiently, which can also limit the life of the reservoir.

The option that sediment loads create a berm allowing for more water to be trapped is not correct. In fact, sedimentation reduces the amount of water that can be stored, rather than increasing it.

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