Minnesota Water Resources Conference - Water Resources Center ...

BOOK OF ABSTRACTS
Tuesday, October 28
Concurrent Sessions IV 10:00–11:30
Track D: Wetland Restoration and Mitigation Design Strategies, continued
Managing Stormwater and Restoring a Natural Wetland Corridor in an Urban Setting
Ron Leaf, SEH, Inc., rleaf@sehinc.com; and Jeremy Walgrave, SEH, Inc.
This former 50-acre golf course in Maplewood is undergoing developedment with a mix of commercial land
uses. Within the core of the development is a unique restored wetland and open space system. The project
required overcoming several hydraulic design challenges and wetland design constraints to accommodate
stormwater conveyance/management and wetland mitigation needs. The primary challenge was roughly 1200
feet of twin 48-inch pipe that dissected the site and connected wetland systems to the north and south. The
challenge proved to be part of the solution—removing a segment of the pipe system to create new wetland.
The remaining challenge was to “sneak” around the wetland drainage system to provide adequate storm water
drainage for more than half of the site. The presentation will cover the design challenges, the design-build
approach to construction, winter construction issues, and highlight the performance of the system to date
including two seasons of growth on the restored wetland plantings.
65 Minnesota Water Resources Conference, October 27–28, 2008