In accordance with Council Resolution #511/2016 dated August 22, 2016, and City of Windsor (hereafter City) administration’s subsequent instructions, we have completed our examinations into the improvement of the Marentette-Mangin Drain. The following report addresses the outcome of our examinations, our findings, and our recommendations for improvements to the subject drain.

1.0 Introduction

In 2010, the Province of Ontario commissioned the Windsor Essex Mobility Group (WEMG) to construct the Rt. Hon. Herb Gray Parkway (hereafter Parkway). Its construction necessitated substantial modifications or impacts to several municipal drains within the City, Town of LaSalle and Town of Tecumseh, including the Marentette-Mangin Drain. The Marentette-Mangin Drain provides drainage for approximately 50 hectares of lands in the City. The drain commences from its upstream limit near Lamont Street and flows southerly to its outlet into the Grand Marais Drain, approximately 550 m southwest of the Parkway corridor.

An approximate 190m upstream segment of drain was eliminated in conjunction with construction of the Parkway; the eliminated portion had originally lied within the boundary of the Parkway lands. Construction of the Parkway altered the tributary area of the Marentette-Mangin Drain, land-use characteristics within the drain boundary, as well as the physical state of the drain proper.