Ngập Lụt Tầng Hầm

Ngập Lụt Tầng Hầm

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Hệ thống thoát nước

Flooded street

Đường bị ngập

Downspout to storm

Từ máng xối xuống cống

Surface water into basement

Nước mặt đất vào tầng hầm, do:

Surface water thru MH

Nước mặt qua hố thăm dò

Street catch basin

Hố gom nước

poor lot drainage

độ dốc khỏi tường nhỏ

Cracked MH or sewer

Hố thăm dò /cống nứt

eaverstrough overflow

máng xối qúa tải

Block in sewer or house lateral

Nghẹt cống hay quanh nhà

weeping tile to storm sewer

Nước quanh móng nhà

plugged downspout

máng xối nghẹt

Floor drain

lỗ thoát ở nền tầng hầm

reverse slope driveway

đường xe dốc ngược

City sanitary sewer

Cống nước thải

City storm sewer

Cống nước mưa

leaky windows & door

cửa sổ và cửa đi hở

Cracked basement wall

tường tầng hầm nứt

Các vùng dễ bị lụt

On-going Basement Flooding Environmental Assessment (EA) Studies

This site was last updated June 13, 2013

Welcome to the homepage for information on Basement Flooding Study Projects.

Photos of flooding areas

On August 19, 2005, the City of Toronto experienced a severe storm event that resulted in the flooding of many residents homes, erosion in ravines and watercourses, and damage to City infrastructure such as roads, bridges, culverts and sewers. Toronto Water received over 4,200 basement flooding complaints, the majority of which occurred north of Highway 401. It was within this area where the storm exceeded a 100 year event and experienced over 150 mm (6 in.) of rainfall in a three (3) hour period.

As a result, the City is carrying out studies to investigate the causes of flooding problems and make recommendations to reduce future flooding.

34 basement flooding Study Areas have been identified. Please select one of the following active projects:

Study Area 1 (East York – O'Connor Drive & St Clair Ave East)
Study Area 2 (Leaside)
Study Areas 4 & 5 (Humber River / Black Creek)
Study Area 6 (Humber River / Black Creek)
Study Areas 13 & 15 (Jane Street / Sheppard Avenue West)
Study Area 17, 18, 19 (Allen Road / Highway 401)
Study Area 20 (Lawrence Park Neighbourhood)
Study Area 22 (Victoria Park Avenue / Lawrence Eglinton)
Study Area 24 – 27 (Yonge Street/Sheppard Avenue East)

Reported evidence of basement flooding included:

Water backed up from floor drains;
Overloaded storm and sanitary sewers;
Leakage through cracks in basement walls;
Flood water from windows and/or doors; and
Heaved basement floors

Possible causes of the flooding were attributed to:

Surcharge of sanitary sewers caused by infiltration/inflow;
Surcharge of storm sewers;
Surface flooding;
High ground water table; and
Blockage in sewers and street catch basins.

The Environmental Assessment (EA) Process
Each study is being carried out in accordance with the Class EA requirements set out in the Municipal Class Environmental Assessment (October 2000, as amended in 2007). The Class EA process will provide members of the public and interest groups with an opportunity for input at key stages of this study. The study will define the problem, consider and evaluate alternative solutions, assess impacts of the proposed solutions and identify measures to lessen any adverse impacts.

Upon completion of each study, a Project File will be submitted to the Ministry of the Environment and will be available for a 30-day public review.

Other Material

Basement Flooding General Information
Homeowner Measures (PDF)
Tips for the Homeowner (PDF)
Causes of Basement Flooding Presentation (PDF)
Glossary of Terms (PDF)
Remedial Solutions Presentation (PDF)

WWFMP - Current Class Environmental Assessments

The City’s Wet Weather Flow Master Plan (WWFMP) is a long range plan for the management of wet weather flows across the City’s six watersheds and waterfront. As with all Master Plans, it provides for the integration of infrastructure needs with environmental assessment planning principles. The Master Plan was prepared by following the Municipal Class EA (PDF) – a planning and design process used by municipalities to meet the requirements of the provincial Environmental Assessment Act.

While the Master Plan addressed the need and justification of projects at a broad level by completing Phases 1 and 2 of the process, more detailed studies for each of the individual projects included in the Master Plan must now be completed. Each of the studies follows will follow the planning and design process described in the Municipal Class EA (PDF) which includes an evaluation of alternatives, consultation with the public and agencies, an assessment of the impacts of the recommended solution and identification of measures to mitigate any environmental impacts.

Listed below are the Environmental Assessment studies projects that are currently underway. Click on each for more information and opportunities to get involved.

Below are Environmental Assessment studies that have been completed:

Source: Municipal Engineers Association (MEA), Municipal Class Environmental Assessment, October 2000, as amended in 2007.