Green Meadows West Central Channel Stabilization Project

Project Map

Click here (PDF)

Construction Plans

Upstream of Foxboro Road (PDF)

Downtown of Foxboro Road (PDF)
Final Plan (PDF)

Estimated Cost

$1,948,000 (engineering and construction)

Project Status - (update as of 8/23/18)

Should you wish to receive regular construction updates as the project progresses, please provide your email address to

Segments A, B and C, the portions of the project east of Foxboro Road are now substantially completed and the area has been seeded and stabilized. While there may be some minor cleanup occurring in this area, there should not be any equipment, etc. in the area. Additionally, the trail has reopened east of Foxboro Road.

West of Foxboro Road, the work in Segment E, the area immediately adjacent to the storm sewer outlet at the west end of the project is also complete. In the remaining Segment D, westerly from Foxboro Road to the area of the storm sewer outlet. All of the rip rap/riffles, etc. on both sides of the creek have been completed, pending some final touchups. Along the north side of the bank the grading has been completed and this area has been seeded and stabilized, with some pending final touchups in this area. The bulk of the remaining work will be from the construction of soil lifts, grading and ultimately seeding/stabilization along the south bank as the contractor works their way out of the construction site. The bulk of this work, weather dependent should be completed over the next couple of weeks.

As the bulk of the construction activity winds down the contractor will finalize clean up, seeding and stabilization of the three access/staging locations (east and west of Foxboro Drive near Chambery Boulevard and along Hadfield Circle), these areas will be completed together after all larger equipment has been removed from the site. At about this same time there will be some concrete repair work completed on sidewalks/curbs along Foxboro Road/Chambery Boulevard/Hadfield Circle to repair damage from construction. This will require some short term/temporary closures of sidewalks/travel lanes as necessary.

Finally, the contractor will also be installing native plug plantings through the project areas primarily within the soil lift areas. While the area has been fully seeded, these smaller plug plantings will help the native vegetation establish quicker.

Please note as areas are seeded/stabilized, the construction fencing in those areas will be removed. This is being done so the area won’t have to be disturbed to remove the fencing in the future. However, construction activity will remain in the area and residents should avoid entering the construction site, even in those area where fencing has been removed.

As previously communicated, HR Green is providing construction inspection throughout the duration of the project. Should you have any questions/concerns related to construction activity you can contact Eric Van Zee, Construction Inspector at 515-204-7424.


Design Engineering: December 2016-Fall 2017
Project Letting: November 2017
Construction: November 13, 2017 to September 2018
Contractor: Synergy Contracting, LLC of Bondurant, Iowa


Kyle Riley, P.E., CFM
HR Green
5525 Merle Hay Road, Suite 200
Johnston, IA 50131

City Staff Project Contact

David Wilwerding, AICP
Johnston Community Development Director
Email David Wilwerding

Project Description

This drainage channel is located on outlots owned by the Green Meadows West Homeowners Association, and runs between Hadfield Circle and Heather Bow west of Foxboro Road and Heather Bow and Tiburon Circle east of Foxboro Road. The purpose of the project would be to correct erosion and to stabilize the stream banks from the outlet of the storm sewer project completed in 2010 easterly to Beaver Creek.

Project Funding

The Green Meadows West Central Channel Stabilization stormwater improvements are funded by the Johnston Stormwater Utility, which was implemented in July 2012 to create a dedicated funding source for projects that reduce erosion, protect properties and infrastructure from flooding and to improve water quality within the City of Johnston, for more information on the stormwater utility, visit the stormwater projects page.