Assessing Climate Change Risk and Resilience in the Yukon
Table 13 (continued)
Impact
7
8
6
11
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
destabilizes soil
conditions
18
Mining
EN
12 10
CH
AC
CM
Permafrost
10
16
12
thaw
LH
EH
10
10
HW
8
Permafrost thaw
INF
FS
EN
alters land forms
11
10
and ecology
CH
AC CM
High: More likely than not
to occur multiple times
per decade; may occur
annually
Moderate: More likely
9 than not to occur once
per decade; may occur
multiple times
• Reduced access to
work sites
• Possible
infrastructure failure
and risks to
surrounding
ecosystems and
communities
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
High: More likely than not
to occur multiple times
per decade; may occur
annually
Permafrost
12
11
11
thaw
LH
EH
HW
11
11
10
Changing water
INF
FS
EN
levels, conditions,
20
15 17
Very high: Likely annual,
ongoing occurrences
and flow in rivers
CH
AC
CM
and lakes affect
Snow, ice,
water
18
16
16
communities and
infrastructure
LH
EH
HW
14
16
14
Changes to snow
INF
FS
EN
Very high: Likely annual,
and ice cover
21
21 16
ongoing occurrences
create unsafe or
CH
AC
CM
unreliable
Snow, ice,
water
19
23
19
conditions that
reduce access
LH
EH
HW
20
21
20
16
35
precipitation and
Extreme
flash flooding
causes physical
Snow, ice,
water
and chemical
Impact 35 did not receive enough responses for
conclusive results. It may be worth assessing in a
future climate risk assessment
instability in mine
sites
CHAPTER 4 PRIORITIES AND RECOMMENDATIONS
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