be found near the mouth. This is partly due to poor water quality but also due to lack of habitat. The dock wall continues, mostly unbroken, north to Riverdale Park. This is in contrast to the Humber River to the west, which has a natural mouth and is home to about 44 species. Another problem affecting the channel is floating debris that is washed down the Don. Composed largely of logs and dead wood, there is also an assortment of garbage that collects in the channel. The TRCA corrals this material with a boom across the channel. There can be significant flotsam where the Keating Channel enters Toronto Harbour, especially after a big storm. Restoration initiatives On the north side of the channel a slight bend in Lake Shore Boulevard has created a narrow open space. In 1998, the Task Force to Bring Back the Don planted Staghorn Sumac (Rhus typhina), Sandbar Willow (Salix exigua), and Red Osier Dogwood (Cornus stolonifera) in this area. Despite poor soil conditions, the willow and the hardy sumac have thrived. It is now a long narrow glade of small trees and shrubs. Another small green space at the eastern end was also planned for restoration but the project was abandoned after one planting. There was also a proposal to remove part of the dock wall to improve fish habitat. These projects were suspended when it became apparent that a larger project would be starting soon. In 1999, the three levels of government announced plans to revitalize Toronto's waterfront. Among the four initial projects was a plan to restore the mouth of the Don to a more natural outlet. In 2005, an environmental assessment was initiated to investigate options to restore the original mouth of the Don. Some of the options being considered would fill in the Keating Channel and direct the Don River through a new channel just north of Lake Shore Boulevard or straight south to link up or cut the inner basin shipping channel to the south of the Keating Channel. The environmental assessment process is ongoing. Proponents of restoring the mouth of the Don to a more natural state have argued that this restoration would ameliorate the damage expected from a rare flood with water-flow equal to or greater than that from 1954's Hurricane Hazel. Villiers Island In 2018 the western end started to be narrowed, as part of the construction