Yonge Street Corridor (Adjacent German Mills Creek) Between Elgin Mills Road and Levendale Road (Valdor, October 2013), a long list of potential flood mitigation options were reviewed and a short list of options that achieve a substantial reduction in the extent of the Regional floodplain were identified for further review and consideration.  The purpose of this study was to further evaluate the short list of feasible flood remediation alternatives and, following the Class EA process, identify a preferred alternative for improvements to the existing municipal and/or private conveyance system to remediate Regional flooding within this flood vulnerable area.   Due to the wide, shallow urbanized floodplain, previous efforts to model the flooding using HEC-RAS were unsuccessful and it was determined that a 2-D hydraulic model was required to accurately characterize the extent of flooding.  All hydraulic analyses were completed using Mike Flood (coupled M11 and M21) in conjunction with ArcGIS.  The preferred alternative was identified in consultation with the Town, TRCA, other agencies and stakeholders through public consultation.  The study outlined an implementation and phasing strategy for the preferred alternative and included the preparation of preliminary engineering design drawings and detailed construction cost estimates.