Otago Climate Change Risk Assessment 

Our changing climate is already impacting the Otago community. These impacts are varied, and the entire region is sure to experience more changes that are yet to come. To better understand the impacts of climate change and associated risks and opportunities for the region, we have carried out the Otago Climate Change Risk Assessment (OCCRA).

 

Otago Climate Change Risk Assessment (OCCRA) is a resource that can enable us to collectively respond to climate change as a region.

That means local communities, institutions, businesses, government bodies and other organisations helping each other understand how climate change may impact on lives, how we can adapt and mitigate climate change together by making informed and responsible decisions. 

Climate change-related risks were identified under the following categories:

  • Natural environment 
    • Example: Risks to ecosystems from increasing temperatures, changes in rainfall, reduced snow and ice
  • Human (people and society) 
    • Example: Risks to Kāi Tahu sites, identity and tikanga (practices), and non-Kāi Tahu cultural heritage sites 
  • Built environment 
    • Example: Risks to buildings and open spaces, including inland and coastal flooding, coastal erosion, sea level rise, salinity stress 
  • Economy 
    • Example: Risks to livestock farming sector, including drought, fire weather, inland flooding, landslides 
  • Governance 
    • Example: Local authorities lacking capacity to effectively respond to climate change 

 

Summary tables 

The tables below summarize the key risks Otago is facing due to climate change. Each risk is rated as low, medium, high, or extreme for the present, 2040, and 2090. 

 

 

Risks

Risk rating* (highest per category)

Present

2040

2090

E1

Risks to the livestock farming sector from climate change hazards including drought, increased fire weather, inland flooding, and increased landslides

M

H

E

E2

Risks to horticulture and viticulture from climate change hazards including temperature, drought, changing rainfall patterns and extreme weather

M

H

E

E3

Risks to the forestry sector from climate change hazards including temperature, drought, fire and extreme weather

L

M

E

E4

Risks to the fisheries and aquaculture sector from climate change hazards including marine water temperature and water quality

L

M

E

E5

Risks to primary sector supply chains from climate change hazards including inland flooding, coastal flooding and increased landslides

M

H

E

E6

Risks to cost of doing business from climate change hazards including coastal and inland flooding, landslides, and extreme events

M

H

E

E7

Risks to the tourism sector from climate change hazards including higher temperatures, reduced snow and ice, inland and coastal flooding, landslides and erosion

M

H

E

*Highest risk rating per category and hazard relationship highlighted (L=low, M=medium, H=high, E= extreme).

 

 

 

Risks

Risk rating* (highest per category)

Present

2040

2090

B1

Risk to buildings and open spaces from climate change hazards including inland and coastal flooding, coastal erosion, and sea level rise and salinity stress

H

E

E

B2

Risk to flood management schemes from inland and coastal flooding, and sea level rise and salinity stress

M

E

E

B3

Risk to water supply infrastructure and irrigation systems due to drought, fire weather, flooding and sea level rise and salinity stress

H

E

E

B4

Risk to stormwater and wastewater networks from increased temperature, sea level rise and salinity stress, extreme weather events and flooding

H

H

E

B5

Risks to linear transport (roads and rail) from flooding, coastal erosion, extreme weather events and landslides

M

E

E

B6

Risk to airports and ports from flooding and extreme weather events

M

E

E

B7

Risk to solid waste (landfills and contaminated sites) to flooding and sea level rise and salinity stress

M

E

E

B8

Risks to electricity (generation, transmission and distribution) networks from changes in rainfall, extreme weather events and flooding

M

H

E

B9

Risks to telecommunications infrastructure due to sea level rise and salinity stress and extreme weather events

L

M

H

*Highest risk rating per category and hazard relationship highlighted (L=low, M=medium, H=high, E= extreme).

 

 

 

Risks

 
 

H1

Risks to Kāi Tahu sites, identity and practices, and non-Kāi Tahu cultural heritage sites, due to climate change.

 

H2

Risks to community cohesion and resilience from climate change.

 

H3

Risk to mental wellbeing and health from climate change.

 

H4

Risk to physical health due to climate change.

 

H5

Risk to increased inequities and cost of living due to climate change.

 

 

 

Risks

Local vs central government influence

G1

Risk that existing planning, decision making, and legislative frameworks are inadequate for responding to long-term climate change risks and result in maladaptive responses, and potential liability.

Combination of local and central influence

G2

Risk of local authorities lacking capacity to effectively respond to climate change.

Local direct influence

G3

Risk that the national, regional and local governance/institutional structures for managing climate change are inadequate.

Combination of local and central influence

G4

Risk that a low level of community awareness and engagement hinders communication of climate risk and uncertainty, and leads to de-prioritisation.

Local direct influence

G5

Risk that climate change will result in increasing damage costs, with insufficient financing for adaptation and risk reduction.

Combination of local and central influence

G6

Risk that public services will be impacted by climate change.

Combination of local and central influence

 

Risks

Risk rating* (highest per category)

Present

2040

2090

N1

Risks to the terrestrial ecosystems from increasing temperatures, changes in rainfall and reduced snow and ice

H

E

E

N2

Risks to the freshwater (rivers and lakes) ecosystems from increasing temperatures and extreme weather events

M

H

E

N3

Risks to the coastal and marine ecosystems from climate change hazards including ocean acidification and marine heatwaves

L

H

E

N4

Risks to coastal, inland and alpine wetland ecosystems from drought, higher temperatures, changes in rainfall and reduced snow and ice

H

E

E

N5

Risks to Otago water quality and quantity from changes in rainfall, higher temperatures, flooding, drought and reduced snow and ice

M

E

E

N6

Risks to native ecosystems posed by increasing threats from invasive plants, pests and disease due to climate change

M

M

E

 

*Highest risk rating per category and hazard relationship highlighted (L=low, M=medium, H=high, E= extreme).

 

 

Reports 

 

This report presents the findings of Otago's first Climate Change Risk Assessment (OCCRA). It provides a regional picture of how Otago may be affected by climate change.

This report looks at expected changes in the climate of Otago, like changes in temperature and rainfall as far ahead as 2100.

This report presents the findings of New Zealand’s first National Climate Change Risk Assessment (NCCRA). The risk assessment gives a national picture of how New Zealand may be affected by climate change-related hazards.

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