Lisgar Flooding Updates
This page is dedicated to providing regular updates on issues related to the flooding in the Lisgar community.
Activity Update: Jan. 25
January 25, 2012—The following is a summary of the activities undertaken by Transportation & Works in the Lisgar community since the first week of January:
- The removal of creek vegetation has been completed from the Osprey Marsh pond to just north of Doug Leavens Boulevard, which is about one third of the entire length to be cleared. This work is continuing north to the CP Railway crossing.
- Crews are continuing to flush and conduct CCTV inspections of the foundation drainage collection (FDC) sewers in the areas impacted by flooding. Approximately 40% of the affected streets have been completed.
- Water infiltration repairs within the FDC sewers will commence early next week, weather permitting.
- Flow monitoring devices have been installed at four key locations in the FDC sewer system, as part of the consultant's work plan. This data will complement the groundwater monitoring activities which began in late December.
- DVD copies of the video transcript of the December 14th community meeting were mailed to the residents (16, approx.) who had requested a copy.
- The tender for the Osprey Marsh pond improvement works closes today. Assuming satisfactory bids are received, construction is expected to commence in late February.
Activity During and Following Jan. 23 Rainfall
January 24, 2012—During the rain on January 23, the Area Supervisor and Assistant Supervisor completed a site condition review and found that the FDC, Storm and Creek systems were operating within normal parameters.
Transportation & Works staff was on site reviewing the state of our systems and ensuring that the systems were operating in accordance to established parameters. We will continue with our field work to ensure the integrity of the FDC System and the removal of a 4.5m swath of vegetation centred on the Sixteen Mile creek low flow channel. We will also continue to monitor this area during any significant rainfall.
Activity Update: Jan 6
January 6, 2012—The following is an update on the recent activities undertaken by Transportation & Works in the Lisgar community:
- the removal of creek vegetation has been on-going since HRCA approval was received on December 22nd and is expected to be completed in a month or so
- the stone filters around the outlet pipes in the Osprey Marsh pond were removed and replaced, which has improved the pond's ability to drain down to its normal water level following rain events
- the lids of the FDC manholes situated within the berm which passes between the main cells of the Osprey Marsh pond were inspected and freshly sealed to reduce the potential for inflow
- potential FDC cross-connections identified through smoke testing in the Black Walnut area were inspected and found to be false readings (i.e. no cross-connections or improper sources of inflow were revealed)
- crews are continuing to conduct CCTV inspections and flushing of the FDC sewers within the areas impacted by flooding
- as a next step, crews will seal off any cracks or joints within the FDC sewers which are found by the CCTV inspections to be sources of inflow
- staff has received from 46 completed questionnaires that were distributed to attendees of the December 14th meeting, as well as 16 requests for a DVD copy of the meeting
- staff is in the process of producing copies of the DVD for distribution
- it is also noted that staff continue to receive completed questionnaires from the October 28th circulation to residents
Community Meeting on Lisgar Flooding
December 15, 2011—About 200 residents were updated at a community meeting on December 14 about the city’s ongoing investigation and activities related to the flooding issues in the Lisgar community.
The focus of the meeting was on outlining the steps that city and regional staff have undertaken toward finding the root cause or causes of the flooding.
The issue of possible compensation will be addressed following the submission of an engineering study by an external consultant expected in early 2013.
In the meantime, the city will respond immediately as necessary to findings in the study prior to its completion. In addition, during High Water Warnings, city crews will be dispatched to strategic locations in the Lisgar area to monitor water levels and take appropriate action to mitigate further problems.
Presentation Materials:
Visit www.mississauga.ca/flooding to download the slide presentation from the meeting.
E-mail water.info@mississauga.ca to request a copy of the DVD recording of the meeting.
Call 905-791-7800 x4615 to request a household drainage survey for your home provided free of charge by the Regional of Peel.