Spillway Gate Improvements
Duncan Dam and Hugh L. Keenleyside Dam
Spillway gates in BC Hydro dams act as movable water barriers, impounding and controlling the amount of water that can be discharged from the reservoir. These gates are critical components of any dam and are generally used in times of flood when high inflows exceed the ability of generating units to use all of the water.
The Spillway Gate Reliability Upgrade Program was created to put in place the equipment and procedural improvements needed to ensure that the spillway gates at all BC Hydro sites can operate reliably as needed.
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Improvements at Duncan DamDuncan Dam will require a combination of replacement, refurbishment, and the addition of new equipment on the spillway and low-level outlet gates. The scope of work includes rock slope stabilization above the spillway, minor modifications to the spillway gates, replacement of the hoist towers and hoists and installation of backup power supplies for the spillway gates. Execution of this work at Duncan Dam will enhance BC Hydro's ability to safely manage flood waters and will help to consistently maintain the flow requirements of the Duncan Dam Water Use Plan. The Project commenced construction in May 2011, and the in-service date is scheduled for the end of June 2012. Stabilization of the rock slope above the spillway gates took place in May and June, and work on spillway gates 1 and 2 is scheduled to begin this September. Improvements at Hugh L. Keenleyside DamThe Hugh L. Keenleyside Dam project will complete a combination of replacement, refurbishment, and the addition of new equipment on the spillway and low-level outlet gates. The scope of work includes upgrading the mechanical components, electrical power systems and the protection and control systems at the facility. Execution of this work at the Hugh L. Keenleyside Dam will enhance BC Hydro's ability to safely manage flood waters and will help to consistently maintain the flow requirements of the approved Water Licence for the Columbia River at the Hugh L. Keenleyside Dam. All project work will take place within the terms of the Columbia Water Use Plan. This work has been planned so that there are no Arrow Lakes Reservoir drawdowns required. Environmental management plans will be in place for all construction activities, and all Water License Requirements will be met. Throughout the course of this project, communities around the dam will experience temporary road closures during phases of work to ensure public and employee safety. BC Hydro will advertise and provide as much notice as possible in advance of these road closures. The Project is scheduled to be in-service in June 2014. |
Contact usIf you would like to learn more about the project, please contact us by: Toll free: 1 800 663 1377 |
Last Modified: Mar 29, 2012
