Moody Passage — a conversation piece

How might rising sea levels transform Vancouver?
By Nich Johansen, December 18, 2014, The Tyee online, for article, see link here.

Vancouver archipelago_ForWeb_20140929


“When and if this might happen is up for debate, with one estimate putting it somewhere between 1,000 and 10,000 years in the future.”

So maybe such an extreme scenario will never happen.

But it’s useful to think about how and what we build.

Port Moody has low-lying and reclaimed land surrounding the head of the Burrard Inlet, vulnerable in the event of even a modest rise in sea level. The land has current flood risks, threat of liquefaction in the event of a serious earthquake, and surrounding unstable slopes at risk of slides. Port Moody has unique topography.

Clip from Vancouver GeoMap
PoMo GeoMap clip



Soil liquefaction hazard – the light brown shaded area (#4) is described as sand and silt that could liquefy during a strong earthquake. The darker brown area (by #4 and #10) is identified as landfill (former tidal flats). Additional reference: Port Moody Hazardous Lands.

Port Moody receives more rainfall than most areas of greater Vancouver, and if not absorbed the rainfall will flow downhill.

Photo: Recent flooding on Ioco near new fire hall, Oct. 23, 2014.
Ioco flooding 2014

Deforestation, increased paving and concreting, increased street curbing (versus “natural” ground between street and property), loss of permeable ground which can absorb water, increased extreme weather events — a few things to think about. How does development affect the surrounding area, now and in the future?

What is appropriate for Port Moody?

What is best for Port Moody?

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