Constructed wetland (IMAGE) University of Kansas Caption Maple Wetland was constructed about 15 years ago and is a fluvial wetland on a tributary to the Maple River in the Le Sueur River Basin. Credit Amy Hansen Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.