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Alde & Ore Estuary PartnershipAlde & Ore Estuary
Partnership
A partnership set up by the community for the community to protect homes, businesses and our environment from flooding
What is The Alde & Ore Estuary Partnership (AOEP)?
2012 – AOEP formed to create a flood plan for the Alde & Ore Estuary
AOEP has representatives from parishes, landowners, farmers, river users, environment experts and businesses
support and advice given to AOEP by statutory and local government bodies
The AOEP plan…
recognises value of estuary to local economy, and value of its environmental features
focusses on resilience and slow adaptive management through improvement of current flood defences
looks at estuary as a whole; covering 14 flood cells and 18 parishes
will be assessed regularly against sea-level rise and habitat change
will be used to support planning and funding applications
The AOEP plan aims to protect
a thriving and growing visitor economy
hundreds of houses, mostly in Aldeburgh, Orford and Snape, but scattered throughout
businesses in and around floodplain – shops, commercial buildings, farms
infrastructure – roads, water supplies, sewerage works, electricity supplies
7,000 acres of farmland and grazing marsh
miles of walking along estuary banks
sailing, sailing clubs and moorings
Resilience
over the next 20-50 years, the estuary faces a greater risk of flooding from badly maintained walls than it does from rising sea levels
the AOEP plan therefore takes a resilience approach
resilience accepts overtopping will occur in surge events, but avoids catastrophic damage (such as in the 1953 flood) up to a 1:200 event occurring in 2050
1A 1:200 event is not a measure of frequency but of probability. So, a 1:200 flood means there is a 0.5% chance of a flood that particular size happening in any given year. It does not mean it couldn’t happen more than once in a given 200-year period. As a comparison, the surge in December 2013 was a 1:20 event.
What is resilience?
walls will be upgraded from their current height (2.4m –2.9m) to approx. 3.3m overall
higher walls would be overtopped less often and be much less likely to breach, up to a 1-in-200-year (1:200) event
walls will be upgraded according to greatest need and ‘Benefit–Cost Ratio’ (BCR) – cost and sustainability of repair weighed against value of property/infrastructure
1A 1:200 event is not a measure of frequency but of probability. So, a 1:200 flood means there is a 0.5% chance of a flood that particular size happening in any given year. It does not mean it couldn’t happen more than once in a given 200-year period. As a comparison, the surge in December 2013 was a 1:20 event.
Building up walls makes overtopping less likely. Walls can be made wider on the land side, making them more resilient to breaching.
Saltmarsh is often the first line of defence. It protects sea walls and absorbs wave energy. Pilot projects to protect saltmarsh are part of the resilience approach.
Benefits of resilience approach
resilience – most cost-effective of options reviewed by AOEP
overtopping – flood water can be pumped / drained out quickly. Damage to agricultural land is minimised and although impacts of flooding could be longer lasting for property, full recovery is still possible
breaches – damage to property and land is greater and more costly to resolve. With breaches, flood water rises quickly and cannot be removed until breaches are mended
In short, the AOEP plan allows for some overtopping in the worst tidal surges but avoids breaches, which cause much more damage and are much more difficult to resolve. If we have a 1:200 surge in 2050, the plan aims for this level of protection and outcome, ie some overtopping…
avoiding this…
Breaches in walls are difficult and costly to repair; and may not be feasible.
The consequences of flooding…
flooded infrastructure such as roads can be an inconvenience to individuals, but have serious implications for local businesses, reducing custom and revenue in all sectors
flooding can impact tourism – reducing the desirability of an area as a destination for visitors, and affecting recreational access for walkers, birdwatching and sailing…
Why should parishes get involved?
while flooding may affect limited property and land directly, the knock-on effects can involve the whole community
flooding affects individuals and businesses over a wide area, not just the area directly impacted
the benefits of communities working together are also far-reaching
pooling our resources gives us a stronger voice when decisions are being made that affect us all
Who pays?
current Government funding policy protects housing and lives, and some fragile habitats
in practice, urban rather than rural areas are more likely to benefit (although following the December 2013 surge, limited additional funding may be available)
upgrading of estuary walls is likely to cost £7–10M of which only £2–3M is likely to be met by Government
Raising the funds
the plan aims to raise some of the shortfall through ‘Enabling Development’
this is where landowners donate land for sale to developers and exceptional planning permission is granted
the money raised is donated for the benefit of the estuary defences as a whole
Suffolk Coastal District Council have strict criteria to safeguard local interests in these cases
using a pessimistic estimate of house plot values, this could mean 5–8 new houses per parish
Your views matter
we think this is a good plan, but we need your feedback on it – the plan cannot be finalised without it
Get involved
public consultation
3 December Orford Town Hall, Orford 2 pm – 7 pm
2. email us at [email protected] 3. take part in our online consultation
A partnership set up by the community for the community to protect homes, businesses and our environment from flooding
What is The Alde & Ore Estuary Partnership (AOEP)?
2012 – AOEP formed to create a flood plan for the Alde & Ore Estuary
AOEP has representatives from parishes, landowners, farmers, river users, environment experts and businesses
support and advice given to AOEP by statutory and local government bodies
The AOEP plan…
recognises value of estuary to local economy, and value of its environmental features
focusses on resilience and slow adaptive management through improvement of current flood defences
looks at estuary as a whole; covering 14 flood cells and 18 parishes
will be assessed regularly against sea-level rise and habitat change
will be used to support planning and funding applications
The AOEP plan aims to protect
a thriving and growing visitor economy
hundreds of houses, mostly in Aldeburgh, Orford and Snape, but scattered throughout
businesses in and around floodplain – shops, commercial buildings, farms
infrastructure – roads, water supplies, sewerage works, electricity supplies
7,000 acres of farmland and grazing marsh
miles of walking along estuary banks
sailing, sailing clubs and moorings
Resilience
over the next 20-50 years, the estuary faces a greater risk of flooding from badly maintained walls than it does from rising sea levels
the AOEP plan therefore takes a resilience approach
resilience accepts overtopping will occur in surge events, but avoids catastrophic damage (such as in the 1953 flood) up to a 1:200 event occurring in 2050
1A 1:200 event is not a measure of frequency but of probability. So, a 1:200 flood means there is a 0.5% chance of a flood that particular size happening in any given year. It does not mean it couldn’t happen more than once in a given 200-year period. As a comparison, the surge in December 2013 was a 1:20 event.
What is resilience?
walls will be upgraded from their current height (2.4m –2.9m) to approx. 3.3m overall
higher walls would be overtopped less often and be much less likely to breach, up to a 1-in-200-year (1:200) event
walls will be upgraded according to greatest need and ‘Benefit–Cost Ratio’ (BCR) – cost and sustainability of repair weighed against value of property/infrastructure
1A 1:200 event is not a measure of frequency but of probability. So, a 1:200 flood means there is a 0.5% chance of a flood that particular size happening in any given year. It does not mean it couldn’t happen more than once in a given 200-year period. As a comparison, the surge in December 2013 was a 1:20 event.
Building up walls makes overtopping less likely. Walls can be made wider on the land side, making them more resilient to breaching.
Saltmarsh is often the first line of defence. It protects sea walls and absorbs wave energy. Pilot projects to protect saltmarsh are part of the resilience approach.
Benefits of resilience approach
resilience – most cost-effective of options reviewed by AOEP
overtopping – flood water can be pumped / drained out quickly. Damage to agricultural land is minimised and although impacts of flooding could be longer lasting for property, full recovery is still possible
breaches – damage to property and land is greater and more costly to resolve. With breaches, flood water rises quickly and cannot be removed until breaches are mended
In short, the AOEP plan allows for some overtopping in the worst tidal surges but avoids breaches, which cause much more damage and are much more difficult to resolve. If we have a 1:200 surge in 2050, the plan aims for this level of protection and outcome, ie some overtopping…
avoiding this…
Breaches in walls are difficult and costly to repair; and may not be feasible.
The consequences of flooding…
flooded infrastructure such as roads can be an inconvenience to individuals, but have serious implications for local businesses, reducing custom and revenue in all sectors
flooding can impact tourism – reducing the desirability of an area as a destination for visitors, and affecting recreational access for walkers, birdwatching and sailing…
Why should parishes get involved?
while flooding may affect limited property and land directly, the knock-on effects can involve the whole community
flooding affects individuals and businesses over a wide area, not just the area directly impacted
the benefits of communities working together are also far-reaching
pooling our resources gives us a stronger voice when decisions are being made that affect us all
Who pays?
current Government funding policy protects housing and lives, and some fragile habitats
in practice, urban rather than rural areas are more likely to benefit (although following the December 2013 surge, limited additional funding may be available)
upgrading of estuary walls is likely to cost £7–10M of which only £2–3M is likely to be met by Government
Raising the funds
the plan aims to raise some of the shortfall through ‘Enabling Development’
this is where landowners donate land for sale to developers and exceptional planning permission is granted
the money raised is donated for the benefit of the estuary defences as a whole
Suffolk Coastal District Council have strict criteria to safeguard local interests in these cases
using a pessimistic estimate of house plot values, this could mean 5–8 new houses per parish
Your views matter
we think this is a good plan, but we need your feedback on it – the plan cannot be finalised without it
Get involved
public consultation
3 December Orford Town Hall, Orford 2 pm – 7 pm
2. email us at [email protected] 3. take part in our online consultation