Sooke Reservoir

Client: Capital Regional District Water Department (CRDWD)

The Sooke Reservoir is the primary source of water supply for Victoria area. As a result of severe water shortages, the Capital Regional District Water Department (CRDWD) decided to raise the Sooke Dam and Spillway by 6 metres in order to increase the reservoir capacity from 12.5 billion gallons to 20 billion gallons. 

 

UMA provided hydrological, civil and structural engineering services to Thurber Engineering Ltd., including:

• Preparation of a hydrological design memorandum that set the hydrotech­nical design parameters for reservoir freeboard, upstream slope protection and spillway design capacity. 
• Civil and structural designs for the new spillway, spill­way retaining walls and a new access bridge to the reservoir intake tower. 
• Integration of vertical con­trol gates into the 60-metre-long, ogee-crested spillway
• Modifications to the existing spillway channel to accom­modate the design Probable Maximum Flood of 415 m³/s. 
•  Design of a SCADA control system to permit remote open­ing and closing of the spillw­ay gates for reservoir water level regulation.   

UMA also provided field services throughout the construction period and was responsible for development of the Operations & Maintenance manual, emer­gency preparedness plan and inunda­tion mapping.

 

This $9 million project was completed in December 2002.