The completed Capoli Slough Islands project includes eleven new islands, a riffle (rock lined) channel, and emergent wetlands. The islands were built using material dredged from the main channel and from within the Capoli Slough area backwaters. To prevent the new islands from eroding, rock was placed along sections of shoreline and vegetation was planted. The islands help protect and enhance existing islands and aquatic vegetation. The backwater dredging created deeper holes for fish. The riffle channel created habitat for fish and mussels. Migratory waterfowl, shorebirds, turtles, frogs, fish, mussels, beaver, mink, and otter are using the area for homes, food and resting areas.