These dams are controversial, especially because of their potential impacts on water flows and on ecosystems (Section 3). Some parties have claimed that not enough consideration was given to alternative strategic options in the assessment procedures, the need for dams in terms of broader energy policy, or impacts on river basins (along with river basin plans) and the ecosystems where they might be located. On the other hand, it is argued by some that the dams will provide additional benefits in terms of flood and drought control and fire risk mitigation.