PART A - Management Unit Summary,
Issues and Objectives
PEMBROKESHIRE COUNTY COUNCIL
Management Unit Title
SHORELINE MANAGEMENT PLAN STAGE 2
Porth Clais to Ynys Bery (Ramsey)
(18STJ/B)
SMP Coastal Process Unit (CPU) Title
Wooltack Point to Ramsey
Management Unit Summary
Location, Extent, GR This unit covers approx 4km of coastline, which is comprised of steep headlands
and promontories.
CPU Issues of Relevance
•
Ownership - National Trust
Coastal Processes
Tidal Range:
5.9m approx
Dominant Process:
Wave action
Geomorphology:
Hard rock shore. Coastline of
headlands and promontories and
deeply recessed bays
Existing Defences and Codes
Cliff
STJB1
Constraints (Technical, environmental, economic)
The unit lies within the St David’s Peninsula Coast SSSI and is within the cSAC.
There is little economic benefit to further coastal defence measures.
Littoral Drift:
Opportunities (Technical, environmental, economic)
•
Natural Environment
Designations:
Objectives of Relevance
St David’s Peninsula Coast SSSI
Pembrokeshire Islands cSAC
National Trust
•
Other issues:
Coastal Process
Human and Built Environment
S1, S2
Settlements:
None
Infrastructure:
Coastal Path
Land Use:
Recreation, agriculture
Archaeological:
Other issues:
•
All Core Objectives
Scuba and jet-ski designated
areas
Coastal Defences
Hard rock shore. No man-made defences
Preserve the character and heritage of the National Park coastline
Characteristics (summary text)
This unit consists of a long stretch of rocky coastline, with many headlands and
promontories. It is an isolated area, and the main land uses are agriculture and
recreation. It is an environmentally sensitive area and lies within a cSAC and
SSSI..
Assets at Risk
Development
Property Loss
6
Infrastructure Loss
6
S3, S4
Land Loss
6
Property Flooding
6
Natural Environment
Land Flooding
6
Transport Disruption
6
Recreation Losses
6
Environmental Losses
ü
Historic Environment Losses
6
S6, S7, S8 & S9
Human and Built
Socio-economic Loss None
S12
Risks low due to limited cliff erosion.
Management Unit Title
PEMBROKESHIRE COUNTY COUNCIL
PART B - Management Unit Details
SHORELINE MANAGEMENT PLAN STAGE 2
Porth Clais to Ynys Bery (Ramsey)
(18STJ/B)
Physical Environment
•
Coastal Processes - Generally sheltered by Ramsey Island although south westerly seas are likely to affect local anchorages.
•
Geomorphology - The shoreline comprises 35m high cliffs of thickly bedded purple sandstone dipping at 60.
•
Controls & MU Interaction - Limited, if any, interaction with adjacent bays.
•
Shoreline Evolution - limited evolutionary change over the next 50 years
Natural Environment
•
Landscape - The National Trust Own the Coastal land between Whitesands Bay and Porth Clais , Heritage Coast.
•
Coastal Habitats and Species - .
Subtidal and intertidal rock substrate extends around most of the open coast of the cSAC, particularly around the Marloes / Dale and St David’s peninsulas and around, between and
offshore from the many islands and small islets
•
Designations – Pembrokeshire Islands cSAC, St Davids Peninsula SSSI.
Human and Built Environment
•
Principle Land-uses – Farmland, settlement of Porthlisky is situated inland (away from any risk of erosion). No assets are at risk and so Part C has not been completed in full
•
Cultural Heritage – Nothing reported in Stage 1 Report.
•
Planning Policies of relevance - National Park Planning policies and PCC Local Plan
Coastal Defences
No built defences
PEMBROKESHIRE COUNTY COUNCIL
PART C - Strategic Policy Screening
Appraisal
SHORELINE MANAGEMENT PLAN STAGE 2
Management Unit Title
Porth Clais to Ynys Bery (Ramsey)
(18STJ/B)
Do Nothing
Effects on Coastal
Processes
Effects on Natural
Environment
Effects on Human &
Built Environment
Implications for
Coastal Defences
No change
situation
to
contemporary
No change
situation
to
contemporary
No change
situation
to
contemporary
No change
situation
to
contemporary
Yes
Economic Viability
Yes
Sustainability
Hold The Existing
Line
Advance The Existing
Line
Retreat the Existing
Line
This option is not economically
viable due to the likely capital
expenditure required.
This option is not economically
viable due to the likely capital
expenditure required.
This option is not economically
viable due to the likely capital
expenditure required.
PART D - Preferred Policy Option
PEMBROKESHIRE COUNTY COUNCIL
Management Unit Title
SHORELINE MANAGEMENT PLAN STAGE 2
Porth Clais to Ynys Bery (Ramsey)
(18STJ/B)
Appraisal of Potentially Viable Options
Do Nothing - this is the only viable option on technical, environmental and economic grounds based on the assets at risk.
Recommended Future
Studies and Monitoring
Recommendation
Provisional Policy
Short Term – DO NOTHING
Cliff Monitoring (every 5 years)
Long Term - DO NOTHING
Possible Alternative Policy
Implementation
Recommendations and
Timescales