Envisioning a world with plentiful healthy wetlands improving water quality, climate, biodiversity, and human well-being.
Your’e inviteD: mini-bioblitz!
Join us for a Mini-Bioblitz on Sunday, April 26 at the Dixon Waterfowl Refuge! Participants will split into focused groups led by experts to document species in different taxonomic groups: plants, insects, birds, and reptiles/amphibians. This event is being hosted as part of the first-ever City Nature Challenge spanning Central Illinois. Whether you are an avid naturalist or a total beginner, join us for a critter-filled day!
PADDLING & FISHING SEason
Earth Day volunteering
The 2026 paddling and fishing season at the Sue and Wes Dixon Waterfowl Refuge extends from May 1st through September 7th. View this year’s fishing limits and plan your visit today.
Read the 2024 Annual Report
Our 2024 Annual Report celebrates three decades of impact and showcases the past, present, and future of TWI’s work.
Join TWI, the Chicago Park District, and The Nature Conservancy on April 18th for the 3rd annual volunteer trash clean-up along South Stony Island Avenue.
What is a wetland?
Check out our handy infographic to learn about the three characteristics that all wetlands share.