2019 Update

The study is completed to determine the contributing factors for surface and basement flooding in the City of Toronto and recommended solutions to improve the City’s sewer system and overland drainage routes in order to mitigate flooding problems.

Study Area 34 location in the Southwest Scarborough area has experienced recurring basement and surface flooding during extreme storms in the past.

Following consultation with agencies, City Divisions and the public, the following are the study’s key findings, accepted by the City:

75 Schedule A+ and 3 (three) Schedule B projects including:

  • New and larger storm and sanitary sewers
  • Sections of large diameter storm and sanitary sewers to provide storage during heavy rain storms
  • Catchbasin control installation: inlet control device and high capacity inlets

Please view the Area 34 Executive Summary

Please contact Mae.Lee@toronto.ca for details about this image
Study Area Map Area 34 Basement Flooding

Study Area 34 was established in southwest Scarborough in 2012 after several reports of flooding were filed with the City. The flooding occurred during severe rainstorms in the summer of 2012. Historic records show that this area has experienced basement flooding under severe storm events for several years. Previously reported basement flooding incidents in Area 34 for severe rainstorms included incidents that occurred on May 12, 2000, August 19, 2005, July 31, 2012, May 28, 2013 and July 8, 2013

Study Area 34 is located mainly in Ward 35 and in a portion of Ward 36. It is roughly bounded by Eglinton Avenue East to the north, Anndale Road and CNR to the south, Victoria Park Avenue to the west, and Winter Avenue to the east. It is serviced by a combined sewer system, and as well, separate storm and sanitary sewer systems. The storm sewer system in the Study Area was originally designed to convey a two to five year design storm and, as per the engineering practice at the time, there were no specific guidelines applied on the design of the major system (overland flow) drainage.

A City hosted drop-in event was held in July to review, discuss and seek public feedback on the recommended solutions for reducing the risk of basement and surface flooding and improving stormwater run-off quality in the study area.

Thursday, July 12, 2018

Warden Hilltop Community Centre

25 Mendelssohn Street (Warden Avenue, north of St Clair Avenue East)

What is a Class Environmental Assessment?

Ontario’s Environmental Assessment (EA) program promotes good environmental planning by determining and managing the potential effects of a project prior to implementation.

The EA program ensures that public concerns are heard. EA balances economic, social, cultural and natural environmental needs so that projects benefit Ontario.

This study is being carried out according to the Municipal Class Environmental Assessment process. This is an approved approach to satisfying requirements of the Environmental Assessment Act specifically tailored to municipal infrastructure. The process includes identifying the problem or opportunity to be addressed, developing and evaluating a range of alternative solutions, providing opportunities for public input and identifying a preferred solution.