Lower Mainland Flood Management Strategy
Phase 1 Results & Next Steps
Phase 1 of the Lower Mainland Flood Management Strategy (2014-2016) is now complete.
Work of the past two years under this collaborative initiative has included an analysis of Lower Mainland flood scenarios, a regional assessment of flood vulnerabilities, and a review of current flood protection works and practices. Phase 2 is set to begin and will focus on developing a regional flood action plan by 2018, including a cost-sharing proposal for flood protection.
Phase 1 work shows there’s a growing risk of a large-magnitude flood in BC's Lower Mainland, and that if a major Fraser River or coastal flood were to occur between now and 2100, it would trigger losses estimated at $20 to 30 billion.
Lower Mainland flood risks are projected to worsen over the next 85 years, both in terms of flood frequency and size, because of sea level rise and other projected impacts of climate change. The Province of BC has committed $1 million towards Phase 2 development of the flood action plan.
Phase 1 Materials
The Phase 1 summary materials and full reports are available below.
Media Release & Backgrounder
Media Release: Lower Mainland Flood Action Plan Ahead (May 30, 2016)
See also Province of BC media release: Province invests $1 million in development of Lower Mainland flood action plan (May 30, 2016)
Phase 1 Summary Report
Phase 1 Full Reports
Project 1 Reports
Project 2 Report
Regional Assessment of Flood Vulnerability (Final Report with Appendices) (April 25, 2016) (Note: Large file: 56 MB)
Phase 1 Maps for Coastal Flood Scenarios (A and B) and Fraser River Flood Scenarios (C and D)
For information on the flood scenarios and information reflected in these maps, please see the Phase 1 Summary report and the full report Regional Assessment of Flood Vulnerability.
Coastal Flood Scenarios (A & B) Overview Map
Fraser River Flood Scenarios (C & D) Overview Map
In 2014 work was underway to develop a Lower Mainland Flood Management Strategy to better protect communities along the lower Fraser River and coast – from Hope to Richmond and from Squamish to White Rock.
Partners in this inter-jurisdictional initiative have responsibilities or interests that relate to flood management: the Government of Canada, the Province of British Columbia, 26 local governments, and other entities in the region, including those focused on transportation systems, agriculture and business.
There are two phases to the strategy development:
Phase 3 (2018-) will focus on implementation of the Strategy.
There is growing understanding that federal, provincial, local and First Nations government agencies and other public and private sector organizations must come together to coordinate flood mitigation efforts on a regional basis. The costs of responding to a major flood event far outweigh the costs associated with effective, proactive planning and investments across the region.
The Fraser Basin Council is program manager and facilitator of the process.
For more on the Lower Mainland Flood Management Strategy, see our backgrounder.
Questions? Contact Steve Litke, Senior Program Manager, Watersheds and Water Resources.
Federal and Provincial Governments
Government of Canada
Province of British Columbia
City of Abbotsford
Village of Belcarra
Bowen Island Municipality
City of Burnaby
City of Chilliwack
City of Coquitlam
Corporation of Delta
Fraser Valley Regional District
District of Hope
District of Kent
Township of Langley
Village of Lions Bay
City of Maple Ridge
District of Mission
City of New Westminster
City of North Vancouver
District of North Vancouver
City of Pitt Meadows
City of Port Coquitlam
City of Port Moody
City of Richmond
District of Squamish
City of Surrey
City of Vancouver
District of West Vancouver
City of White Rock
BC Agriculture Council
BC Wharf Operators Association
Canadian National Railway
Canadian Pacific Railway
Greater Vancouver Gateway Council
Insurance Bureau of Canada
Pacific Institute for Climate Solutions
Port Metro Vancouver
Simon Fraser University (ACT)
Vancouver International Airport