Question 5 of 7: Land-Use Planning Tools in Canada, and Using Them to Reduce Climate Risk

Question 5: Land-Use Planning Tools in Canada, and Using Them to Reduce Climate Risk (20 marks)

Question text not reproduced: the examination questions are © Engineers and Geoscientists BC. Open the official past paper (linked at the top of this page) to read the question, then follow the worked solution below.

The seven most prominent land-use planning tools in Canada. Canadian municipalities and regions steer land use through a fairly standard tool-kit of statutory and policy instruments, each operating at a different level of generality:

(Fiscal instruments — development charges, density bonusing/community amenity contributions — and public education are often listed alongside these as supporting tools.)

The four ways of using these tools to reduce climate risk. Climate change raises the frequency and severity of hazards — riverine and urban flooding, coastal storm surge and erosion, wildfire in the urban–wildland interface, extreme heat, drought and slope instability. Land-use planning reduces the risk from these hazards — risk being roughly hazard × exposure × vulnerability — in four complementary ways:

1. Avoid — direct development away from hazard-prone land. Reduce exposure by keeping people and property out of harm’s way: designate floodplains, coastal-erosion zones, unstable slopes and the wildfire interface as hazard lands in the OCP, and prohibit or strictly limit development there through zoning, DPAs and refusal of subdivision. The single most effective climate-risk tool is simply not putting vulnerable development in the dangerous place.
2. Resist — require development to withstand the hazard. Where some development must occur near a hazard, reduce vulnerability by regulating how it is built: minimum finished-floor elevations and flood-proofing, coastal setbacks and freeboard, FireSmart vegetation-management and non-combustible-materials standards in the interface, and slope-stability and drainage requirements — all delivered through zoning standards, DPAs and subdivision/site-plan conditions.
3. Moderate — use natural systems and green infrastructure to buffer the hazard. Reduce the hazard itself by protecting and building the landscape’s own defences: retain wetlands, floodplains, riparian buffers, forests and the urban tree canopy; require low-impact development, permeable surfaces and stormwater retention to cut flood peaks; and use shade and greenspace to cut urban-heat-island effects — secured through conservation tools, DPAs, servicing standards and OCP green-infrastructure policy.
4. Adapt — build adaptive capacity and keep plans flexible. Reduce vulnerability over time by embedding adaptation in the planning system: base plans on current climate and hazard mapping, review and update them as projections change, coordinate land use with emergency management, and raise public awareness — so the community can anticipate and adjust rather than merely react.

Used together, the four approaches move a community from reactive exposure to proactive resilience: avoidance removes exposure, resistant design cuts vulnerability where exposure is unavoidable, natural systems lower the hazard, and adaptive capacity keeps the whole system responsive as the climate continues to change.