Friends of the Chicago River
“Prairie Wolf Slough” project goal is to; Restore wetland, praire and savanna habitats in the Middle Fork of the Chicago River watershed to demonstrate effective natural resource solutions for problems commonly associated with urban growth.
http://www.chicagoriver.org/programs/pws.asp

“North-center Neighbors Riverbank" project goal is The North-center neighborhood is located in an urbanized area on Chicago's north side. The project site is a few blocks long on the east bank of the Chicago River's North Branch where several residential streets dead end, providing direct access to the River.
http://www.chicagoriver.org/programs/berteau.asp

Illinois Sierra Club
A list of Threats and Dangers Biological Invasions Aggressive non-native plants quickly choke out native plants and, in turn, drive out animals that rely on the native plants for everything from food to reproduction.
http://www.sierraclub.org/chapters/il/calumet/threats/index.html

Illinois Environmental Protection Agency Bureau of Water
Watershed Management Water quality is a reflection of its watershed. This is true whether talking about surface water (rivers, streams, lakes, and wetlands) or groundwater. A watershed is the area that drains to a water body.
http://www.epa.state.il.us/water/watershed/index.html