Cell Descriptions - South East Natural Resources Management Board

SE7 – Canunda NP
this time. Thus advice on flood levels, for example, should not be used in engineering or
development planning.
Climate change
element/ scenario
Combined climate
changes and sea
level rise
throughout this
cell
Sea level rise:
2030 : +c.20cm
2070: +c.80cm.
Storms:
Frequency continues
to show great
variation on a
decadal scale.
Intensity of large
storms increases.
Warmer average
conditions:
2030:+0.3 to.6 0 C
2070:+1.5 to 2 0 C
Drier average
conditions:
2030: -2% to 5%
2070: - 10% to 20%
‘Flashy’ run off:
Drier creeks, but
larger rare floods
Groundwater
lowering; saline
incursion:
Nearshore sea
Impacts and implications Protect and manage Address landscape
(for this cell) habitat threats issues: fire,
connectivity,
refuges, hydrology
This cell presents a complex
pattern of habitats sensitive
to change.
Increase in storm foredune
damage and beach recession.
The partially buried
calcarenite topography could
well lead to an indented
coastline, of reefs and
embayments.
Foredune damage leads to
dune de-stabilisation, and
transport of sand across the
barrier.
2030: Occasional storm tide
flooding above highest
known tides.
2070: Flooding will affect all
swamps and adjacent low
lying areas.
Frequent storm damage to
foredunes.
(Impacts uncertain. Existing
terrestrial vegetation is
found in warmer conditions
elsewhere)
Dune vegetation adapts to
drier conditions, but
recovers more slowly from
fire and storm damage: dune
mobilization becomes more
likely.
Drains and creeks may
increase sediment load to
coastal swamps and lakes
(this depends on land
management practices).
Aridity and sea level rise a
threat to perched freshwater
table within the dunes.
Persistent swell wave climate
Continue a rectified
aerial photographic
record at an appropriate
resolution, in order to
show change from
current baseline.
Maintain an aerial
photographic record of
shoreline change.
Active management of
dune blowouts.
Manage sill height on
tidal inlet to adjust to
higher marine storm
elevations as part of the
adaptive management of
Lake Frome.
Active management of
dune blowouts.
Active weed control
within dunes.
Maintain watching brief
on sedimentation of
Lake Frome.
Monitor salinity in small
freshwater lakes.
Adaptive management
of plant assets.
Monitor shoreline
Maintain
connectivity of
vegetation within
the region.
.
Limestone Coast and Coorong Coastal Action Plan 316