2. Infrastructure

Potential Adaptation Strategies and Actions for Infrastructure

Strategies

Potential Actions

Doing Already

2.0 General

Review and update official community plans, subdivision and servicing bylaws, flood management plans, master drainage/stormwater management plans and wildfire management plans to reflect climate change considerations

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Review and update emergency planning and preparedness for floods, wildfire, extreme heat and other extreme weather events based on projected climate changes and impacts for the region.

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Incorporate climate resilience considerations into infrastructure assessments, plans and maintenance schedules, replacements and repairs (see 2.1 for more detail)

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Prepare climate resilient design guidelines for new residential builds and renovations (see 2.2 for more detail)

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FireSmart around buildings and infrastructure

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Minimize development, disturbance and vegetation removal on and near slopes exceeding 25% to avoid landslide risks, and visually monitor at-risk slopes (see 2.3 for more detail)

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Plant drought- and pest-resistant trees and landscaping as part of urban forestry and tree renewal strategies

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2.1 Incorporate climate resilience considerations into infrastructure assessments, plans and maintenance schedules

Conduct a climate resilience infrastructure risk assessment

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Monitor at-risk infrastructure (e.g. asbestos cement pipes) for climate change and weather impacts, and to gain a better understanding of at-risk or vulnerable areas

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Increase inspections and maintenance for at-risk areas (e.g. water source intake sites, water pump and pressure reduction stations)

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Accelerate replacement or upgrading of infrastructure identified to be at-risk

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2.2 Prepare climate resilience design guidelines for new residential builds and renovations

Research, prepare and promote climate resilience design guidelines for new builds and renovations that address projected local climate change impacts

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2.3 Update subdivision and servicing bylaws to address climate resilience

Incorporate low impact development standards into new developments, such as reducing paved areas, maintaining natural features, incorporating green space using absorbent landscaping techniques and constructing wetlands and detention ponds

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Promote FireSmart development by requiring underground wiring and locating sidewalks, boulevards and highways to act as firebreaks and evacuation routes

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2.4 Develop a landslide prevention strategy

Minimize development, disturbance and vegetation removal on and near slopes exceeding 25 per cent

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Visually monitor at-risk slopes for signs of subsidence and instability

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2.5 Encourage regional, provincial and federal agencies to assist municipalities in becoming climate resilient

Encourage relevant provincial and federal agencies to act as clearing houses for good practices in planning for climate resilience

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Encourage federal and provincial agencies to provide funding for climate resilience programs and initiatives

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2.6 Update road design standards to address projected climate impacts

Require water retention or on-site stormwater management techniques for new roads, and encourage application of these techniques when repairing roads, giving consideration to the removal of curbs and gutters and the construction of swales and sand filters

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Examine how weather affects collision rates locally and to what extent collision rates rise during heavy precipitation and winter-weather events [from PG)

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Pilot test alternative and potentially more climate resilient forms of concrete and asphalt on roads or parking lots (from PG)

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2.7 Renew or update current Official Community Plan (OCP) actions related to stormwater management

Identify at-risk drainage catchments

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Design drainage and flood control on the basis of updated return cycles for storm events

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Create wide buffer zones around streams

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Incorporate low impact development standards

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2.8 Promote on-site water retention and management on public, residential and commercial properties

Utilize education and incentives to encourage residential and commercial property owners to consider on-site water retention and management techniques.  Adopt these techniques on municipally-owned properties.

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2.9 Ensure that climate resilience is considered in drainage infrastructure replacement and repairs (for roads see s.6)

 Minimize the use of culverts and restrictions to stream channels to maintain natural stream patterns where possible

 

 Ensure that trash racks or debris screens (for storm drains and culverts) adequately capture and hold debris while still allowing flows to enter, and that debris can be removed easily and safely.

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 Ensure resizing of stormwater pipes can accommodate additional run-off as a result of increased climatic variability and increased impervious surfaces

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2.10 Prepare or update a community flood management plan

 Undertake a flood hazard study, including analysis of stream flow data for flood return frequency and possible blockage sites in water systems

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Ensure the community has an emergency flood plan with evacuation procedures

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Review floodplain designations to incorporate climate change projections and potential geotechnical hazards

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Consider adopting a “design flood” strategy of temporarily storing water in depression areas (parks, green space, buffer zones, and agricultural fields)

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Ensure infrastructure development is discouraged within floodplains and that land use restrictions are enforced

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2.11 Update master drainage (MDP) and/or stormwater management plans to reflect climate change projections

Update drainage infrastructure data to ensure all information required for hydraulic analysis is current and reliable (e.g. pipe diameters, pipe invert elevations, open channel cross-sections, and channel/pipe lengths)

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Ensure climate load, maturing capacity, and other change loads are analyzed in preparation of the plan

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Address hydrological (potential peak flow rates) and hydraulic (quantify capacity) analyses using current and projected (2050) climate values, updated vulnerability analysis and updated location analysis for debris screens for large debris

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Ensure that the plan incorporates actions at the property, neighbourhood and watershed scale

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2.12 Increase record keeping and frequency of maintenance, inspections and cleanups for all drainage infrastructure

 Increase the frequency of fall inspection/cleanup for creek and stream culverts to reduce risk of debris blockages

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Maintain records documenting the amount, type, and date of debris removed from culvert or storm sewer inlets

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Review maintenance/inspection schedules for stormwater drains to minimize risk of localized flooding in areas that have flooded in the past

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Consider the need for equipment to assist with debris removal

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Useful Material

Infrastructure and Climate Risk Assessments - Engineers Canada - Presentation to the City of Castlegar, February 2010.