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Lower Mainland Flood Management Strategy

In 2014 the Lower Mainland Flood Management Strategy (LMFMS) initiative was launched to better protect communities along the lower Fraser River and south coast — from Hope to Richmond and from Squamish to White Rock — from risks of a major flood. Participants in the LMFMS have responsibilities or interests related to flood management and include the Government of Canada, the Province of British Columbia, Lower Mainland local governments and several non-governmental entities in the region.

Phase 1 of the LMFMS development process was completed in May 2016: see Phase 1 below for key findings.

Phase 2, focused on developing a long-term strategy, is now underway (2017-2020).

Phase 2 Progress Updates

The Flood Strategy Briefing offers progress update on Phase 2:

The Fraser Basin Council – as facilitator of the initiative – will send the briefings regularly to LMFMS funders and other participating entities via chief administrative officers and executives, as well as to members of the Joint Program Committee for Integrated Flood Hazard Management and other advisory committees.

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 What Did We Learn in Phase 1?

Phase 1 work included an analysis of BC Lower Mainland flood scenarios, a regional assessment of flood vulnerabilities, and a review of current flood protection works and practices in the region.

The results show that there is significant risk of a large-magnitude flood in the Lower Mainland, and that the risk is 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. 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, which would be the largest disaster in Canadian history.

Phase 1 shows the critical importance of a regional strategy and a major investment in flood mitigation. The costs of a major flood event far outweigh the costs associated with effective flood mitigation.

To read the Phase 1 Summary Report and full technical reports and maps, see Phase 1 Results

Learn More


The Fraser Basin Council is program manager and facilitator of the Lower Mainland Flood Management Strategy project.

For an overview, see our backgrounder.

Questions or comments? Contact Steve Litke, Senior Program Manager at the Fraser Basin Council.


Our Vision

Social well-being supported by a vibrant economy and sustained by a healthy environment.

About the Fraser Basin Council

The Fraser Basin Council (FBC) is a charitable non-profit organization that brings people together to advance sustainability in the Fraser River Basin and throughout BC. Established in 1997, FBC is a collaboration of four orders of government (federal, provincial, local and First Nations) along with those from the private sector and civil society. We work with people in multiple sectors, helping them find collaborative solutions to today’s issues through a commitment to the social, economic and environmental dimensions of sustainability. Our focus is on healthy water and watersheds, action on climate change and air quality and strong, resilient communities and regions.

FBC Project and
Partner Sites

Plug in BC:

BuySmart Network:

BC Rural Network:

Rethinking our Water Ways:

ReTooling for Climate Change:

Climate Action Toolkit:

Contact Us

FBC has offices in Vancouver, Kamloops, Williams Lake, Quesnel and Prince George. We also have staff located in Abbotsford and Vernon.

To reach us, see FBC Offices and FBC Staff.

Our main office is:

Fraser Basin Council
1st Floor, 470 Granville Street
Vancouver, BC V6C 1V5

T: 604 488-5350
F: 604 488-5351