Envisioning a world with plentiful healthy wetlands improving water quality, climate, biodiversity, and human well-being.
double your impact for smart wetlands
Join twi in the field - upcoming Volunteer opportunities
A small wetland in the right spot can clean the water draining from an entire farm field. Help us build more of them across Illinois. Gifts to Smart Wetlands are being matched right now.
Permanently Protected
On May 10, 2026 the Illinois Nature Preserves Commission approved the final dedication of Sandy Hollow as a nature preserve buffer addition to the Dore Seep Nature Preserve.
PADDLING & FISHING SEason at the DIxon waterfowl refuge
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.
Check out our upcoming volunteer events and get your hands dirty helping our restoration projects thrive! No experience is needed for our rewarding and fun volunteer activities.
What is a wetland?
Check out our handy infographic to learn about the three characteristics that all wetlands share: hydrology, hydrophytic plants, and hydric soils.
Read our 30th anniversary annual report
TWI celebrated three decades of designing, restoring, and creating wetlands in 2025. View our special anniversary Annual Report to learn about our work through the decades and what comes next.