Assessing Climate Change Risk and Resilience in the Yukon
Table 5 summarizes the risk scores for for the most significant impacts related to Priority 3.
Table 5 Summary of risk scores, Priority 3: Permafrost thaw that affects communities, infrastructure and access
4
8
0
Impact
Risk score
(1-25) Likelihood x
Consequence
Likelihood
based on a score from 1
(very low) to 5 (very high
Consequences to values
Permafrost thaw
INF FS
EN
and ground
17
12
12
High: More likely than
not to occur multiple
subsidence
times per decade;
CH
AC
CM
damages
may occur annually
Permafrost
14
15
14
thaw
buildings and
infrastructure
LH
EH
HW
=1
11
12
11
Permafrost thaw
INF
FS
EN
alters land forms
11
10
and ecology
CH
AC
CM
Permafrost
13
11
11
thaw
LH
EH
HW
11
11
10
Permafrost thaw
INF
FS
EN
causes critical
16
9
13
infrastructure
CH
AC CM
failures
Permafrost
thaw
12
11
11
LH
EH
11
11
HW
10
Moderate: More
9 likely than not to
occur once per
decade; may occur
multiple times per
decade
High: More likely than
not to occur multiple
times per decade;
may occur annually
.
Damage to homes and
community gathering
places
Damage to critical
infrastructure
Health and safety
concerns for community
members living in or
accessing buildings with
permafrost damage
• Difficulty accessing the
land
Changes to the
landscape and impacts to
wildlife
• Exposure of traditionally
harvested ecosystems to
contamination
• Damage to mining infra-
structure and downstream
impacts to communities
• Mental health impacts
associated with
changing landscapes
•Impacts to cultural and
community values from
reduced access to the
land
• Impacts to culture,
community gathering,
ability to share
knowledge, bring
together Elders and youth
.
.
The nine values: AC = Access CH = Culture and heritage CM = Community EH = Environmental Health
FS = Food security HW = Health and well-being INF = Infrastructure LH = livelihoods
Legend:
EN =
Energy
Likelihood score: 1
= very low 2 = low 3 = moderate 4 = high 5 = very high
Risk score
Low 0-4
Low 5-8
Moderate 9-12
Moderate 13-15
High 16-20
High 21-25
PAGE 20
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