Climate Change Adaptation A Municipal Perspective

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Climate Change Adaptation A Municipal
Perspective
Municipality of Delta, British Columbia
June 2, 2008
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Overview Local Climate Change Impacts

• Sea Level Rise -Coastal Issues - Roberts Bank
• Storm Impacts - Flood Protection Systems
• Dyke/Seawalls
• Drainage
• River Hydrology - Agricultural Irrigation System
• River Sediment Transport

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Present
2100
5 m
Coastal Squeeze
0 m (chart datum)
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2) Storm Impacts - Flood Protection
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Visualisation of sea level rise scenarios for
Delta, BC (courtesy of UBC CALP)
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Canoe Pass Dyke Breach(Winter Storm Condition)
Storm Surge Event Max Tide/Surge 2.9m (based on
1.9m high tide, 0.75m storm surge, 0.25m other
setup effects)
Est. Water Depth River Rd. W 1.5 to 2m Ladner
1 to 1.5m
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Westham Island Dyke Breach(Winter Storm
Condition)
Storm Surge Event Max Tide/Surge 2.9m (based on
1.9m high tide, 0.75m storm surge, 0.25m other
setup effects)
Est. Water Depth River Rd. W 1.5 to 2m Ladner
1 to 1.5m
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Agricultural Irrigation Salt Wedge
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4) River Sediment Transport Sediment
Management

• Potentially Higher Sediment Loads
• Harbour Infilling
• Channel Infill
• Impact on local drainage systems outfalls

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Local Issues Sediment Management (Secondary
Channel Dredging)
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Thank-you!