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Pembrokeshire South East Energy Group

Present and Future Flood Risks Explained

27th March 2015

Flood damage in Aberystwyth and Amroth

Present and Future Flood Risks Explained

          Pembrokeshire South East Energy Group was delighted to welcome two speakers from Natural Resources Wales (NRW) to their recent meeting as well as many visitors.

          Richard Wicks started by explaining that NRW was formed by amalgamating three former organisations the Countryside Council for Wales, Environment Agency Wales and the Forestry Commission Wales. They manage 7% of Wales land use, their core principle is Sustainable Development.

          We think of the water cycle in a very simple way water evaporates from the sea, condenses over land then returns to the sea. However it is a far more complex issue with surface water runoff, reservoirs, effluent, flooding and coastal erosion all playing their part. The floods of 2007 was a turning point and the Pitt Report made many recommendations to improve flood risk management. There are many aspects to understanding flood risk which includes the probability of a flood occurring, sea levels, tidal surge and climate change. The audience was shown examples of how to understand the probability of a flood occurring in any one year and the resulting consequences if a flood does occur.

          The NRW Flood Map shows where properties and people in Wales are at risk of flooding. Anyone with internet access can view these maps or by contacting NRW direct. The maps are produced utilising data from Light Detection and Ranging (LIDAR) surveys, the river hydrology and hydraulic mathematical models. One of the maps showed the areas in Saundersfoot which are at flood risk from both fluvial (run off from the land) and the sea.

          Richard showed details of the flooding which took place in Aberystwyth in 2012 following prolonged rainfall. NRW can predict the areas at risk of flooding and the way that land could be affected. They are also able to predict the depth and velocity of flood flows so that those at risk of flooding can be prepared and take action when necessary.

          Phill Pickersgill then talked about the Shoreline Management Plan (SMP):


          The consultation started in 2010 and is due to be signed off next summer. The whole of the Welsh, Scottish and English coastline is undergoing this process. The risks are set out for 1 to 20, 20 to 50 and 50 to 100 year epochs. These timescales would alter if sea levels rose more quickly or slowly than currently predicted.

          The maps showed the intention to take 'no active intervention, hold the (existing defence) line, managed realignment and advance the line'. As far as Amroth is concerned short and medium term the aim will be to hold the line and then no active intervention. Saundersfoot is the same for the short and medium term but managed realignment would be the long term plan.

          Questions were asked about property insurance. It was pointed out that NRW flooding information was used but some insurance companies use their own data. Often companies relied upon a blanket postcode search which did not reflect the geography of the area. It was also incumbent upon solicitors to check a properties flood risk for their clients.

          When asked about new building on the Barbecue site in Saunderfoot the point was made that NRW should be consulted if the development land was shown to be at risk of flooding. NRW Flood Map shows there is a flood risk at the site.

          Neil Sefton warmly thanked both Richard and Phill for their very enlightening presentation which had made all of us aware of the power and unpredictability of nature.


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Past Articles
23rd January 2015Our Home Planet: The showing of the film 'Home' by Yann Arthus-Bertrand
28th November 2014Marine Energy in Pembrokeshire: A talk by Louise Rigby, co-ordinator for Marine Energy Pembrokeshire (MEP)
24th October 2014Extreme Weather Events: A talk on changing weather patterns by Janet Roberts, secretary of PSEEG
26th September 2014Renew Wales - Supporting Groups Across Wales: A talk on the work of this important organisation
25th July 2014How Green is our Wales?: A talk by Rhodri Asby, Deputy Director for Climate Change and Natural Resource Policy
27th June 2014Ty Solar at Rhosygilwen: A visit by members and friends of PSEEG
23rd May 2014Global Warming & Climate Change: A talk by Janet Roberts, secretary, PSEEG
28th March 2014The Swansea Bay Tidal Energy Lagoon: A talk by Owain Morris, Tidal Lagoon (Swansea Bay) plc
24th January 2014P.C.N.P. supports Sustainable Development: A talk by Emma Taylor, SDF Administrator
29th November 2013To Frack or Not to Frack: A talk by John Childs from Safe Energy Wales
11th October 2013Quiet Revolution at Pembroke Dock: A visit with Marten Lewis to the Quiet Revolution factory
27th September 2013Keeping the lights and heating on: A talk by Graham Goodeve
28th June 2013Pembroke 21C Community Association: A talk by Elizabeth Gossage, Pembroke 21C Development Officer
24th May 2013Life beneath the waves; the beauties and the beasts: A talk by Blaise Bullimore, European Marine Site Officer
29th March 2013The National Trust in Wales - Energy Neutral by 2015: A talk by Paul Southall, NT Environment Advisor
1st March 2013Climate Change and a Sustainable Future: A talk by Peter Davies, Sustainable Futures Commissioner for Wales
25th January 2013Waste Not Want Not: A talk by Hywel Gibbs, Pembrokeshire County Council Waste Awareness Officer
30th November 2012Array of Hope: A talk by Paul Carter & Kim Daye from RWE Renewables on The Atlantic Array
26th October 2012The Green Deal: A talk by William Silverstone of Silverstone Green Energy
28th September 2012A Fair Wind?: A talk by Steve Hack of Seren Energy on PSEEG's renewable energy project
14th September 2012Not a Waste of Time: a visit to Withyhedges Landfill and recycling centre
29th June 2012The Need for a More Sustainable Future: A talk by Geraldine Leach of Transition Narberth
1st June 2012Know your Flood Risk: A talk by Andy Irving, Flood Risk Management Team Leader
11th May 2012The Power of the Sun: A visit to the Solar Farm at Rhosygilwen
23rd March 2012Planting Green Thoughts: A talk by Jo Horsley, Environment Wales Development Officer
24th February 2012The Atlantic Array offshore wind farm: A talk by Robert Thornhill, Development Manager
2nd December 2011Pathfinder Progress: A talk by Peter Willis from the Welsh Government's Pathfinder Programme
4th November 2011The DeltaStream project: A talk by Chris Williams, Development Director of Tidal Energy Ltd.
30th September 2011How Green is my Valley?: A talk by Grenville Ham, Manager of The Green Valleys Project
23rd September 2011PSEEG's visit to Carew Mill with Marten Lewis of the Darwin Centre
5th August 2011The Manner of the Message: A talk by Neil Sefton on communication skills
24th June 2011The Work of the Darwin Centre: A talk by Marten Lewis, manager of the Darwin Centre
27th May 2011Electric Cars The Road Ahead?: The talk by John Lilly of Dragon Electric Vehicles
13th May 2011Are electric cars the way forward?: A talk by John Lilly of Dragon Electric Vehicles
22nd April 2011Sustainability in Action: A visit to the Science & Technology Park (Technium) in Pembroke Dock
1st April 2011A Revolution in Wind Energy?: A talk by Vaughan Griffiths from Quietrevolution, Pembroke Dock
25th February 2011Preparing for Floods: A talk by Richard Wickes of the Environment Agency
14th January 2011The Way Forward for Wind?: A talk by Steve Hack of Seren Energy
12th November 2010How Green is your Castle?: The National Trust & Global Warming
15th October 2010Challenge of the Rising Sea: The effects on the Pembrokeshire coastline
10th August 2010The beautiful Welsh coastline: Response to possible rising sea levels
18th June 2010Visit to Costain at Canaston Bridge: Not Costing the Earth
16th April 2010Feed in Tariffs: Power to the People
12th March 2010Heat Pumps & Photo Voltaic Panels: Prepare for the Goodlife
12th February 2010Parliamentary Candiates at Green Question Time in Saundersfoot
15th January 2010Weather & Climate: A Question of Energy
4th December 2009Sustainable Community Ventures: Regeneration in Pembrokeshire
13th November 2009Community Initiatives: Sustainable Wales leads by example
16th October 2009Climate Change Challenge for Candidates & Micro-generation with wind turbines
2nd October 2009A Visit to Castle Pill Wind Farm: Quiet blows the wind
11th September 2009Renewable Sustainable Energy: An Energy Survey for South East Pembrokeshire
10th July 2009A talk by Lorraine Dallmeier of Infinergy: Wind Power - Pembrokeshire's Potential
12th June 2009St. Oswald's, Jeffreyston - Pembrokeshire's Beacon of Sustainability
24th April 2009Solar Panels: Three Cheers for Sunny Pembrokeshire
13th March 2009Ashton Hayes Community Energy Reduction & Hot Water From the Sun
13th February 2009Could Pembrokeshire go carbon neutral?
14th November 2008Environment Wales to provide 'Start-Up' Funding for PSEEG
17th October 2008PSEEG to become a Registered Charity

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