Tweddle Place Storm and Sanitary Sewer Upgrades

​​In 2012, storms caused extensive surface flooding, damaged homes, vehicles and property and caused sewage backup into basements throughout Tweddle Place. 

The Tweddle Place Storm and Sanitary Sew​​er Upgrades project was initiated with the objective of reducing the risk of flooding from storm sewers, basement flooding, and surface flooding in Tweddle Place, Lee Ridge, and Michaels Park, during high intensity, low frequency rainfall events.

The Tweddle Place Storm and Sanitary Sewer Upgrades project has been completed. The upgrades included expanding the existing Tweddle Place Dry Pond, upsizing the storm sewers, and installing storage pipe for the sanitary system.​​

​​Tweddle Place dry pond and living wall

A dry pond is a stormwater management facility which has been designed to stay dry and only begin to fill with water in large rain events when the stormwater system cannot handle the water volumes. During heavy storm events, the pond acts as a storage facility. The water will then drain from the dry pond into the downstream stormwater system when there is available capacity. The dry pond will help reduce pooling of water on the streets, flooding of manholes, and the risk of basement flooding.

EPCOR has completed all of the dry pond expansion construction, including the living wall structure and the extension, new trail and landscaping.

EPCOR will continue the landscaping maintenance through 2022. The City of Edmonton will take over maintenance of the dry pond and living wall in 2023.​​

​S​torm and sanitary upgrades