Situated along the Clackamas River near Barton County Park, River Island is 240 acres of natural area that provides habitat for native species including endangered salmon and steelhead, native turtles and migratory birds. The main portion of the site in the middle of the river was a gravel mining operation until the 1996 flood, which greatly altered the natural area's landscape by breaching man-made levees and shortened the main channel of the Clackamas River. GreenWorks and Inter-Fluve worked with Metro to help create a vision and concepts for restoring natural channel processes and supporting multiple values including fish and wildlife habitat, riparian and upland forests, water quality and recreation.
GreenWorks assisted with public outreach and prepared presentation materials to easily convey complex engineering concepts into understandable, photo realistic graphics that help the public and stakeholders understand the opportunities and what the site could look like once it is restored. Conceptual design alternatives were created for restoration of riparian-forested wetlands at the gravel mine site as well as design and restoration of Goose Creek, reconnecting it to the Clackamas River mainstem for cool water rearing habitat for juvenile salmonids. Inter-Fluve is currently developing a site conservation plan and permit-level designs.