Renewable means "naturally replenished." This means that renewable resources are limited to nature's ability to replenish. The moment nature is no longer able to replenish a resource; then that resource is scarce.

Imagine using water for renewable energy when there is scarcity of it.

Dams retain water. They also raise the water level in areas. For example, reservoirs often feed canals which irrigate land that would otherwise be unarable.

Most of the dams in the Western United States were justified because they increase the water available for farming. Hydro-electricity was considered secondary benefit to the dam.

The biggest argument against dams is that they disrupt the natural fishery.

!WINEX