Environment Canada is warning of another atmospheric river bringing a prolonged period of heavy rain to Maple Ridge and Pitt Meadows, starting on Sunday afternoon, March 15.
The rain is forecast to last until Wednesday morning, March 18, with total rainfall amounts of more than 150 mm, finally easing on Wednesday afternoon.
The rain could be mixed with snow on Sunday, but freezing levels will quickly rise Sunday night, said Environment Canada. The heaviest rain is expected on Monday and Tuesday.
Environment Canada warns of the following impacts:
• Prolonged heavy rain or snow, combined with mountain snow melt, high river flows and the potential for flooding.
• Extensive water pooling on roads, and washouts may occur.
• Greater risk of landslides due to saturation of slopes.
A high streamflow advisory has been issued by the BC River Forecast Centre, which warns residents river banks may be unstable.
The City of Maple Ridge advises crews are inspecting city infrastructure like drainage systems, culverts and pump stations, monitoring conditions closely, and are ready to respond as necessary.
The city advises:
• Clear leaves and debris from gutters and catch basins near your home to prevent localized flooding.
• Pre-register for Provincial Emergency Support Services at ESS.gov.bc.ca.
• Review your home emergency plan and supplies.
• Have a plan to stay with friends or family outside known floodplains in case of evacuation.
• Connect with neighbours or vulnerable residents to ensure they are aware and prepared.
Residents living in flood prone areas who require sandbags are advised to contact the city’s operations centre at Operations@MapleRidge.ca or call 604-463-9581.
View flood maps and flood readiness information at mapleridge.ca.