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Woodlands Woodbine Community Drainage Improvements

Photo Gallery - Unclassified

  • Southland Flooding
  • Southland Flooding
  • Southland Flooding
  • Southland Flooding

The City’s Community Drainage Improvements Program works toward mitigating overland flooding in areas throughout the City. Drainage studies were undertaken to identify solutions for communities frequently hit by flooding due to extreme rainfall. Such solutions can include adding additional storm drainage pipes, increasing the size of pipes, and adding wet or dry storm ponds to help manage stormwater.

In recent years the communities of Woodlands, Woodbine, Cedarbrae and Braeside have experienced an unusually high number of high volume rainfall events. These communities currently have a storm level service of a one-in-five year rainfall event or less, which was the standard at the time these communities were first built. That means that there is now a 20 percent chance (or greater) that the storm system will not handle rainfall events causing local flooding in any given year.

Drainage improvements being looked at for these communities target a 1-in-50 year level of service. Once upgrades are in place there will be a two percent chance in any given year that rain events would overwhelm the storm system.

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Braeside dry pond

The City of Calgary is constructing a new dry pond in the fields located east of the John Ware and St. Benedict schools​. This dry pond will greatly reduce flooding during extreme rain events, specifically the flooding that occurs at the intersection of Southland Drive S.W. and Braeside Drive S.W. Construction of the dry pond is complete, with only the landscaping remaining. Installation of the sod will be completed in spring 2019.

Braeside dry pond

Schedule impact:

  • Project completion schedule has been extended to spring 2019 owing to difficulties obtaining sod. Fencing will remain in place until sod installation is completed.

Construction impacts:

Construction of the dry pond involves excavation and grading, underground piping and landscaping. Chain link fencing has been installed and the fields will remain inaccessible to the public for the duration of construction.

  • Increased traffic and noise to site (construction crews, trucks hauling materials to and from site) on Southland Drive and on Palliser Drive. Construction access will be off of Palliser Drive.

Community benefits

During heavy rainfall, overall vehicle and pedestrian safety will be improved, traffic congestion reduced and emergency vehicle access unimpeded by flooding. John Ware and St. Benedict schools will each receive a new soccer field (two in total) and a new baseball diamond will be built allowing for more recreational opportunities for the community.

24th Street Storm Trunk Diversion

Construction will extend along 24th Street from Woodview Dr. to Woodpark Blvd S.W. and into the Bebo Grove area of Fish Creek Provincial Park.

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Phase 1 - 4: Summer 2019

  • Storm sewer diversion - The storm sewer installation along 24th St. S.W. is complete.
  • Surface improvements – Paving works and upgrades to the intersection of 24th St. and Woodpark Blvd S.W. will continue into 2019.

Current impacts and updates: June 12 - July 3, 2019

  • Single lane traffic on 24 St. south of 127 Ave to Woodpark Blvd.
  • Single lane traffic East / West on Woodpark Blvd. between Woodacres Cres Dr. and Woodridge Dr. S.W., on South half of Woodpark Blvd

24 Street Storm Trunk Diversion construction - June 2019
Click to view full image.

Construction impacts:

  • Construction of Phase 1-3 of pipe installment began July 2018 and is complete with paving works remaining.
  • Portions of 24th Street S.W. will be closed in stages, but access to 127th Avenue S.W. will be maintained from either the south or the north, and bus routes will be maintained.
  • Access and parking restrictions may affect certain residents, and the project team will coordinate with those affected.
  • Equipment and materials will be stored at the proposed pond site in Fish Creek Provincial Park, and will be transported via the park access road. Access to the Park from 24th Street S.W., as well as access to the affected areas within the park may be limited for portions of the construction period.
  • Phase 4 is being coordinated with construction necessary for the Southwest BRT. Crews will complete the storm trunk installation first, and then build the roundabout in the road right of way at 24 Street and Woodpark Boulevard to ensure work for both projects is complete in one season.
  • Construction of the storm pond as well as bank stabilization work will take place in the spring and fall of 2019.

Community benefits

The storm diversion will significantly reduce flooding that occurs along 24th Street SW and in the communities of Woodbine and Woodlands. During heavy rainfall, overall vehicle and pedestrian safety will be improved, traffic congestion reduced and emergency vehicle access unimpeded by flooding.

Bebo Grove Storm Pond

A new storm pond is being constructed in the Bebo Grove day use area of Fish Creek Provincial Park. The pond is a hybrid wet pond-wetland where wetland water levels will vary with the seasons and amount of rainfall. A new asphalt trail will be constructed around the south perimeter of the pond to connect with existing trails in Fish Creek. Construction is underway, with landscaping to be completed in the summer of 2020.

Construction impacts

Construction of the pond consists of earthworks (excavation and grading), underground piping and landscaping. Construction impacts will include:

  • Increased traffic to the Bebo Grove day use area of Fish Creek Park (construction crews, trucks hauling materials to and from site)
  • Construction noise
  • Access road and day use area will closed to the public for the duration of construction. Pedestrian and cyclist access will be maintained into and throughout the park.

Community benefits

The storm pond will allow for storage of stormwater during rain events and improve the quality of the water discharged to Fish Creek by separation and settlement of suspended solids. Newly created picnic areas and lookouts surrounding the pond will provide spaces for park users to enjoy the improved aesthetics of the Bebo Grove area and the wet pond will attract more bird and wildlife species.

Bebo Storm Pond


Bebo Storm Pond

Secondary Improvements

This project spans Cedarbrae, Braeside, Woodlands and Woodbine, and aims to implement localized improvements in order to alleviate existing flooding issues.

In 2017, The City identified several high priority sites for flood mitigation, including the installation of inlet control devices at multiple locations, with construction to continue this year. These sites were identified and prioritized by means of modelling, data collection, field checks and registered 311 complaints, with more sites to follow in 2020.

  • Catch basin upgrades (Sites 1A, 1B, 2, 3, 4, 7, 8) which will improve the capture of stormwater.
  • Spill route improvements (Site 5, 9) improve overland flow paths and reduces the depth of ponding at spill points in the local neighbourhood. 
  • Storm sewer diversion (Site 6) include the installation of storm pipes and catchbasins to divert, increase capacity and alleviate surcharging;
  • Installation of inlet control devices (ICD's) used to address local storm sewer surcharge problems by restricting the amount of stormwater captured by catchbasins. This will also help reduce water backing up into basements and sewer overflows since capacity is better controlled at the pipe inlet, and the water remains in the catchbasin or above ground.

Construction for this work began in Fall 2018 and will continue in the summer of 2019. The City will be in direct contact with residents in the immediate vicinity of each project to inform them of timelines, any impacts and to answer any questions they may have.

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Catchbasin Upgrades

Upgrades to the existing catch basins help increase stormwater capture and will take place at these locations:

  • Woodview Dr. S.W. & Woodbiew Bay S.W.
  • Woodpark Blvd. S.W.
  • Woodbine Blvd. S.W.
  • Braeside Dr.S.W.
  • Woodridge Dr. S.W.
  • 26 Street S.W. & Ceduna Park S.W.
  • Woodbine Blvd S.W. & Woodfield Road S.W.

It is expected to be completed by fall 2019.

Spill Route Improvements - Woodglen Rise S.W.

The work undertaken within the laneway south of Woodford Court S.W. consists of minor re-grading, re-paving, and installation of swales. This will reduce the volume of overland stormwater flowing south down the lane from Woodford Court and will reduce the likelihood of flooding for low-lying properties adjacent to the laneway.

Construction of the swales and lane paving are to be completed in spring 2019.

Storm Sewer Diversions - Cedarpark Drive S.W.

There will be a a new 750mm storm sewer installed from Cedarpark Green to Southland Drive S.W. to alleviate flooding issues.

The storm sewer installation on Cedarpark Drive S.W. will start on May 24, 2019 and be divided into three segments, each taking approximately 2-3 weeks to complete. Please refer to the image.

  • Segment 1 will start at the north end of Cedarpark Drive S.W., with the stormwater sewer being augured under the pathway between 312 and 308 Cedarpark Drive S.W. This will involve a lane closure on Southland Drive S.W., for the duration of a week starting May 28th. The left turn lane and the lane immediately adjacent on eastbound Southland DR. SW approaching the intersection of 24th Street S.W., will be closed for a 50m stretch to accommodate the stormwater sewer tie-in.
  • For segment 2, the storm sewer installation will continue along Cedarpark Drive S.W.
  • Lastly, segment 3 will consist of re-grading the existing pathway between 216 and 212 Cedarpark Drive S.W, in order to provide overland drainage onto 24 Street S.W.

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