River restoration activities have been known to negatively affect orchid populations that have become established or re-established in previously altered river habitat.

A river restoration scheme must consider all of these factors before undertaking a program as these three factors are what leads to a larger biodiversity.

In 2006, a river restoration project was completed, in which this section of river was restored to a normal width.

The corporation, concerned that it might someday be required to remove the dams and pay for river restoration, sought to transfer the dams to the federal government.