Gallagher Lake rock slide
Update from Town of Oliver
What happened and where
On January 25, 2016 a significant rock slide occurred at Gallagher Lake which impacted a siphon on the canal irrigation system which provides irrigation water to the Town of Oliver, Electoral Area C (rural Oliver), and Osoyoos Indian Band. The break is near station 2+055 on the flume section at Gallagher Lake.
Works Schedule
April 1
First break, complete framing forms and culvert setting
April 2
Concrete pour for first fix
April 4
Removal of forms
April 5 to 7
Prepping of second fix, framing forms and culvert setting and patching cracks and seams
April 8
Removal of forms
April 11 and 12
Additional concrete parging, tie-ins and clean-up
April 18
Irrigation Turn On
What this means?
The Town may be able to send water through the canal by April 13 or 14, depending on no complications. May require a few days to assess to ensure everything is ready for irrigation turn on. The Town will strive for irrigation turn-ons starting the week of April 18th.
Background
This section of siphon was installed in 1997 to help minimize and eliminate damages to the existing canal system. It is a 1950 mm (78”) diameter reinforced concrete pipe buried over with approximately 3 m of fill. It was engineered to withstand a great force if more debris were to fall. The fill was unable to withstand the force and direct damage occurred.