US Army Corps of Engineers
Chicago District

Morton Arboretum

Section 206, Water Resources Development Act 1996, as amended (Continuing Authority Program)


The Morton Arboretum project site is in Lisle, Ill., on the DuPage River East Branch (DREB). The DREB was first channelized in the project area during the 1920s for agricultural purposes. Stream channelization was implemented again during the 1970s in an attempt to relieve flooding in the Valley View subdivision, but without success, and in turn further adversely affected riverine ecology. The project purpose is to improve fish and other aquatic habitat, while addressing streambank erosion. Project features include adding boulders and woody structures to the river; grading the banks back to a more natural slope and stabilizing with native vegetation; and removing exotic vegetation from the floodplain and replanting with native vegetation.


Total Project Cost:

 $ 3,600,000

Federal Cost:

 $ 2,340,000

Non-Federal Cost:

 $ 0


Selective clearing has been completed, and grading activities are near complete, and initial planting of native vegetation is scheduled for fall of 2016.


Feasibility Report Finding of No SIgnificant Impact (FONSI) - Appendix G

Design Documentation Report




Project Manager

Nicole Toth

Project Area

Click map to enlarge.