Areas which flood

The purpose of the embankments was to create land for agriculture. In some cases embankments were created and the area behind was allowed to flood and flush out a number of times to reduce the salt content of the soil. The Minister and Land Commission were exempted from any responsibility for maintenance of land sold by the Land Commission under Section 10 of the Land Act, , and this responsibility falls on the current landowners, in line with the provisions of the Land Acts.

The OPW carried out a survey of these embankments in and as part of the work of the Browne Commission. Part IV of the Arterial Drainage Act, created a provision for embankments to be absorbed into drainage schemes. The Act was amended on a number of occasions, e. The purpose of the schemes was to create land for agriculture. Drainage Districts were carried out by the Commissioners of Public Works under a number of drainage and navigation acts from to the s to improve land for agriculture and to mitigate flooding.

Channels and lakes were deepened and widened, weirs removed, embankments constructed, bridges replaced or modified and various other work was carried out.

The purpose of the schemes was to improve land for agriculture, by lowering water levels during the growing season to reduce waterlogging on the land beside watercourses known as callows. Local authorities are charged with responsibility to maintain Drainage Districts.

Layer Information The Embankments layer identifies the embankments that form part of Drainage Districts. Embankments are walls of soil or sods that were erected to prevent flood water or high tides from entering land. Drains and sluices or pumps were also provided to take away rainwater that fell behind the embankments. Layer Information The Benefited land layer identifies land that was drained as part of the Drainage District. The original maps also identified other land owned by the same landowner so as to calculate the appropriate charge for maintenance.

Arterial Drainage Schemes were carried out under the Arterial Drainage Act, to improve land for agriculture and to mitigate flooding. Rivers , lakes weirs and bridges were modified to enhance conveyance, embankments were built to control the movement of flood water and various other work was carried out under Part II of the Arterial Drainage Act, The purpose of the schemes was to improve land for agriculture, to ensure that the 3 — year flood was retained in bank this was achieved by lowering water levels during the growing season to reduce waterlogging on the land beside watercourses known as callows.

Flood protection in the benefiting lands was increased as a result of the Arterial Drainage Schemes. The Brosna Westmeath, Offaly and Laois was the first scheme, which commenced in The last schemes were completed in the s.

Layer Information The Benefited land layer identifies land that was drained as part of the scheme. Bogland and other lands are identified separately. In the early schemes, large areas of bog were drained which facilitated peat extraction for fuel and horticulture. The flood mapping produced through the CFRAM Programme will provide an even greater evidential basis for sustainable planning decisions. Following approval of the Climate Change Adaptation Framework key sectors and Local Authorities are required to develop sectoral and local adaptation plans.

This will require a revised sectoral plan to be prepared by the OPW, covering the flood risk management sector. Other sectors identified in the Framework and Local Authorities will also be required to take account of flood risk when preparing their own sectoral and local adaptation plans.

The OPW will work with the Environment Protection Agency, Local Authorities and other agencies during the project-level assessments of physical works and more broadly at a catchment-level to identify any measures, such as natural water retention measures such as restoration of wetlands and woodlands , that can have benefits for Water Framework Directive, flood risk management and biodiversity objectives.

Outside of the Arterial Drainage and Drainage District Schemes, landowners who have watercourses on their lands have a responsibility for their maintenance. Guidance to clarify the rights and responsibilities of landowners in relation to the maintenance of watercourses on or near their lands is available at www.

The service will deal with flood forecasting from fluvial river and coastal sources and when fully operational will involve the issuing of flood forecasts and general alerts at both national and catchment scales. A 5-year programme has been agreed to oversee the establishment of this new service.

This is to include a Chapter on Recovery to include how funding for emergencies, particularly recovery costs, may be handled in the future. The outcomes of two Individual Property Protection IPP pilots currently underway will inform the Government on any feasible support it could provide to at risk properties. The ongoing collection and, where appropriate, publication of flood-related data will help to continually improve preparation for, and response to, flooding.

In extreme circumstances, a homeowner may consider that continuing to live in the property at risk of flooding is not sustainable and would choose to relocate. On 11 April , the Government agreed the administrative arrangements for a once-off Homeowners Voluntary Relocation Scheme for those primary residential properties that flooded during 4 December to 13 January Layer Information An area of land catchment draining to a particular estuary or reach of coastline.

Layer Information Areas where, based on the Preliminary Flood Risk Assessment, the risks associated with flooding are considered to be potentially significant. For these areas further, more detailed assessment was required to determine the degree of flood risk, and develop measures to manage and reduce the flood risk.

Layer Information Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. The development of a flood forecasting system for the Boyne River Basin will progress as part of the development of the National Flood Forecasting Service. See full Flood Risk Management Plan for further details. A background to these agencies and their statutory responsibilities for the River Shannon is provided in the River Shannon Level Operation Review, which is available to download at www.

The levels of Lough Derg are managed for the purpose of electricity generation. Levels in Lough Allen and Lough Ree are managed to ensure minimum navigation levels in the river during dry periods and to reduce the impacts of floods as far as reasonably possible. The levels of the navigation channel in between the lakes are managed by Waterways Ireland. The management of water levels for the purpose of reducing flood risk must take into account the existing statutory minimum operating levels, the potential impacts on the environment, water supply and waterway infrastructure both private and public and the avoidance of causing downstream flooding.

The ESB owns, maintains and operates a range of infrastructure along the River Shannon related to power generation at Ardnacrusha hydro-power station. Waterways Ireland owns, maintains and operates further infrastructure, such as weirs and some navigation canals, related to navigation on the River Shannon.

It is important for the avoidance of increased flood risk that this infrastructure is operated according to the relevant regulations and is maintained in good working order into the future. Further studies to determine the natural channel restrictions, in the vicinity of Banagher, most influencing Summer flood levels along with ecological surveys and assessment to determine the potential environmental impacts with particular regard to the requirement of the Habitats Directive of improving conveyance at these restrictions, a design of such works and the whole life cost.

Any works that may be proposed following the necessary ecological and engineering studies will be subject to the relevant consent processes including environmental. The proposed measure consists of hard defences and improvement of channel conveyance.

At risk properties affected by the River Finn and on the tributaries where it has been found to be the lowest cost option would be protected by a series of flood embankments and walls. At risk properties on the tributaries where Improvement of Channel Conveyance was found to be the lowest cost method will be protected by widening and lowering of the watercourse where restrictions are causing out of bank flooding.

A detailed geotechnical structural and stability assessment of the existing embankments was not undertaken as part of the CFRAM study, but should be undertaken to determine the condition and stability of tese embankments, and what remedial or maintenance works might be required. A flood risk assessment was completed and a flood relief scheme proposed for the Laytown area. The Northlands Flood Relief Scheme was initiated in following major flooding in and , and has been substantially completed.

The proposed further measure for Mornington that may be implemented after project-level assessment and planning or Exhibition and confirmation might include physical works, such as a series of hard defences flood embankments and walls. These works would complement the existing flood scheme already completed in Mornington.

The proposed measure for Carysfort Maretimo HPW that may be implemented after project-level assessment and planning or Exhibition and confirmation might include physical works, such as a series of flood defence walls and five offline storage areas. The result is a reduced flow along the Carysfort Maretimo reducing the length and height of any hard defences required. In doing so, and as part of a fully integrated strategy for all flood risks under the Dublin Flood Initiative, Dublin can act as an exemplar city in contributing to continual development of good practice in pluvial flood risk management as well as wider and integrated flood management practice in Europe.

It is currently at pre-feasibility stage following no apparent viable overall scheme emanating from the CFRAM process. A consultant is to be appointed early in to progress the project and bring the resulting project to planning stage. There is an estimated three years of works upstream of this. The Scheme, which comprises flood defence walls and embankments from Newbridge to Ballsbridge in the Dodder tidal region and further floodwalls and embankments upstream of these to the Smurfit weirs, will provide protection against a Year flood 0.

A flood risk assessment was completed and a flood relief scheme proposed for the downstream extent of the watercourse close to its confluence with the Dodder. A flood risk assessment was completed and a flood relief scheme proposed for the area. The South Campshires Flood Alleviation Scheme was initiated in following the major tidal flood events of February , and commenced construction in November and has been completed.

The Dodder Tidal Flood Alleviation Scheme was initiated in following a major tidal flooding event in February Emergency construction started immediately following this tidal flooding event and continued with new flood walls adjacent to Stella Gardens in and The Scheme, which comprises mainly of flood defence walls and embankments, provides protection against a Year flood 0.

The Wad River Flood Alleviation Scheme was initiated in following two major flood events in this catchment in August and July A third City wide event in October again caused significant flooding in this catchment. The Scheme comprises of large drainage culverts, a large retention pond and flood flow control devices. The Spencer Dock Flood Relief Scheme was initiated in following major flooding in , and was constructed from to The Tolka Flood Alleviation Scheme was initiated in following a major tidal flooding event in February of that year and a major fluvial flooding event in November , these had estimated return periods of 68 and years.

Emergency construction started immediately following the November event with the majority of the works completed between and Construction was undertaken within three local authority areas Meath, Fingal and Dublin City. Within Dublin City the scheme, comprises flood defence walls, embankments, channel conveyance improvements, a new raised bridge in Griffith Park and a pumping station adjacent to Drumcondra Bridge and Botanic Avenue for storm water that would otherwise accumulate behind the new defences.

This number was significantly increased during the flood when the railway bridge from Fairview Park to East Wall Road collapsed during this river flood. The Schem comprises flood defence walls a flood ramp and flood gates, will provide protection for an estimated properties. The Clontarf Promenade Flood Protection Project was initiated in following major tidal flooding in It is currently at detailed feasibility stage with ongoing close consultations with local residents and businesses, and is expected to go to construction, subject to local buy in, in and be completed in The Scheme, that comprises tidal flood defences walls and floodgates as well as utilising the existing sea wall and m wide promenade, is expected to provide protection against a Year flood 0.

The Sandymount Flood Protection Project was initiated in following major tidal flooding in The sections at Merrion Gates and opposite Marine Drive have been constructed. Phase 1 involves new flood walls, raising existing flood sea wall, floodgates at entrances and repairing existing damaged sections along the 1.

Preliminary design has been carried out on this and consultation with local resident groups took place in July Phase 2 involves providing flood protection at the m section of sea walI north of the promenade to Sean Moore Park. The Scheme, that comprises of tidal flood defences walls, existing promenades, rock armour and floodgates as well as utilising existing and possibly future promenades, is designed to provide a Year flood 0.

The North City Drainage Network Upgrades was initiated in following major flooding in August and July with construction subsequently commencing in The Scheme is ongoing, and analyses pure drainage network improvements or diversions of flood waters to neighbouring networks which have spare capacity to reduce local flood risk as much as possible.

Approximately 2km of new drainage networks and collection systems have been put in place to date. Some of these schemes have involved private elements. The North City Pluvial Flood Alleviation Project was initiated in October following major pluvial flooding earlier that year and continued after another significant thunderstorm event in July Some of these areas which had never been flooded before, in living memory, flooded again in October each time to a previously estimated one in year local flood level.

From to the present large local flood water retention depressions called swales as they are normally dry have been constructed in Ashtown 2 , Finglas, Cabra 2. These range in size from cubic metres to over 3, cubic metres. When the drainage system is surcharged rainwater overflows into these storage areas and is released by gravity when the storm subsides and water levels in the drainage network abate.

The local drainage network is also analysed and optimised to cater for this relatively new type of flooding. Part 8 planning and close liaison with residents is required for each local scheme. The proposed further measure for Leixlip that may be implemented after project-level assessment and planning or Exhibition and confirmation might include physical works, such as a series of hard defences flood embankments and walls.

The Leixlip Scheme was initiated in and was constructed from to The proposed measure for Lucan to Chapelizod that may be implemented after project-level assessment and planning or Exhibition and confirmation might include physical works, such as a series of hard defences flood embankments and walls. The River Griffeen Flood Alleviation Scheme was initiated in following major flooding in , and was constructed from to The Scheme, that provides protection to the 1 in year Standard of Protection against flooding from the Griffeen River, comprised of: a the lowering of the river bedrock in Lucan Village, b the lowering of the horseshoe weir at Vesey Bridge, c repointing and raising height of masonry pillars, and d repointing and raising height of wall in Main Street Lucan.

In addition to this Scheme, further developer led flood relief measures were completed along the watercourse. This option involves rehabilitating i. The option also involves rehabilitating of the flapped gates on the Sluice River at Portmarnock Bridge and the construction of a flood embankment on the left bank of the Sluice River upstream of Portmarnock Bridge.

The existing flood walls and their foundations would be strengthened using structural engineering works to allow walls to provide sufficient flood defence function up to the 0. The flapped gates on the Sluice River at Portmarnock Bridge prevent the propagation of high tides upstream of this bridge. These gates would be replaced with new flapped gates as part of this option. The average height of these embankments is 0. Hydraulic modelling indicates that there is no impact on water levels upstream or downstream of Strand Road.

A flood risk assessment was completed and a flood relief scheme proposed for the AFA. The proposed further measure for Maynooth that may be implemented after project-level assessment and planning or Exhibition and confirmation might include physical works, such as a series of hard defences flood embankments and walls and an overland flow route.

The overland flow route will be defined by m of hard defences with an average height of 0. The Lyreen and Meadowbrook Flood Relief Scheme was initiated in following major flooding in November and was constructed from to The scheme works, included cleaning 4 kilometres of the Lyreen River channel and 1. The scheme also provided trash screens and flap valves on channels, where appropriate, and repairing a damaged wall at Parsons Lane.

The scheme provides increased flood protection for 30 properties against flooding from the Meadowbrook and Lyreen Rivers. The proposed measure for Naas that may be implemented after detailed assessment, including data collection and an assessment of potential non-fluvial sources, and then subsequent project-level assessment and planning or Exhibition and confirmation might include physical works, such as a series of hard defences flood embankments and walls , storage, formalisation of an existing flow path to create a flow diversion channel and improvement of channel conveyance.

At risk properties would be protected by storage areas located in the upper catchment to attenuate flow on the Morell, Naas and Broadfield Rivers. Any combination of storage areas result in partial protection to properties and some hard defences with an average and maximum height of 0. The location and volume of storage determine the locations and heights of hard defences required downstream, these issues will be considered at project-level assessment stage.

Other at risk properties would be protected by a diversion of flow and improvement of channel conveyance. The Morrell Johnstown Flood Relief Scheme was initiated in and was constructed from to The scheme also includes a new diversion channel from Forenaghts to the Morrell River.

The Raheny Santry River Flood Protection Project was initiated following major fluvial flooding in , , and , and a first phase was constructed in A phase from the Malahide Road to Raheny Village is at design stage by Dublin City Council and, subject to funding, will progress to submission for planning approval.

A third phase downstream of Raheny village is planned for construction thereafter again subject to funding and planning approval. The Raheny Santry River Flood Protection Project was initiated following major fluvial flooding in , , and The first phase was constructed in and comprised works to attenuate flood flows upstream of Harmonstown Road Bridge.

A phase from the Malahide road to Raheny Village is at design stage by Dublin City Council and, subject to funding, will progress to submission for planning approval.

The Morrell River Turnings Area Flood Relief Scheme was initiated in following major flooding in November , and was constructed from to The scheme works included construction of extra flow capacity to three bridges and the replacement of a further bridge. Embankments were also constructed along some of this reach. These works increased the capacity of the River Morell as far as its confluence with the River Liffey and provided flood attenuation to 10 properties against flooding from the Morrell River.

Further study and data collection are recommended. The Shinkeen Hazelhatch Scheme was initiated in and was constructed from to The Old Connaught scheme was constructed in The proposed further measure consists of building hard defences, at risk properties would be protected by a series of flood embankments on the Burrin River and on the Knocknagee Stream in the Castle Oaks area.

The Carlow Flood Relief Scheme was initiated in following severe flooding in and was constructed from to The proposed measure consists of building hard defences, at risk properties would be protected by a series of embankments and walls, sheet piled where necessary and set back where possible from the river channel. In addition there is a Community Resilience Pilot Scheme on-going for Graiguenamanagh, to progress flood alert and community flood response schemes.

This scheme is intended to facilitate a community based response to flood events by improving the resilience and preparedness of the local community. The scheme includes consideration of the provision of an early flood warning system and flood barriers for individual property protection in Graiguenamanagh.

The pilot study includes a detailed building survey to identify all potential flow paths through the affected properties and the type of foundation and floor in affected property along with other factors which may affect the viability of any proposed measures.

The feasibility report for the pilot IPP schemes is finalised and the matter of progressing with the pilot schemes in the towns is under review in light of the Plan's proposed viable permanent defence schemes for the towns and the on going work to develop a national policy on IPP. A flood relief scheme has been implemented for Leighlinbridge AFA. In addition to the maintenance of the existing scheme, additional measures are required to ensure full protection is provided. The proposed measure consists of augmenting the existing defences with the construction of embankments, walls set back from the river where possible and the installation of automatic flood gates.

The flood alleviation works at Leighlinbridge were initiated in following flooding in which overwhelmed existing defences, and were constructed from to It was constructed from to The Scheme, that comprises flood defence walls, embankments, and a pumping station for storm water that would otherwise accumulate behind the defences, provides protection against empirically observed flood levels for 22 properties along the Kings River.

The proposed measure consists of building hard defences, at risk properties would be protected by embankments and walls, sheet piled where necessary and set back where possible from the river channel. As such, there is further scope for the community views to influence the measure that is progressed to implementation. In addition there is a Community Resilience Pilot Scheme for Thomastown, to progress flood alert and community flood response measures. The scheme includes consideration of the provision of an early flood warning system and flood barriers for individual property protection in Thomastown.

The scheme development includes a detailed building survey to identify all potential flow paths through the affected properties.

The survey will also consider the type of foundation and floor in the property along with other factors which may affect the viability of any proposed measures. It is recommended that a gauge is installed on the water course on the Anner tributary in the Mullinahone AFA. Due to the complex hydraulic processes in this AFA additional data would contribute to improving the accuracy of the current hydraulic model.

In March , Tipperary County Council secured further funding via OPW's minor works programme to reduce the risk of flooding to 14 properties. These works were completed in late and involved the removal of debris from the channel and banks, to make safe prior to building a foundation and retaining wall along the banks.

The proposed measure for Youghal that may be implemented after project-level assessment and planning or Exhibition and confirmation might include Monitoring and Flood Defences. Tidal monitoring to be carried out in advance of any mitigation works to review and determine the design tide plus surge level.

These Flood Defences are expected to provide protection against the 0. The Blackpool Flood Relief Scheme was initiated in following major flooding in It is currently at the Detailed Design stage, and is expected to go to construction in It is currently at the Outline Design and Exhibition stage, and is expected to go to construction in The Scheme is expected to provide protection against the year fluvial flood 1. The proposed measure consist of flood walls and embankments to protect vulnerable properties in Ballingeary.

These wall range in height from 0. The Bandon River Dunmanway Drainage Scheme was initiated in following major flooding in , and was constructed from to The proposed further measure for Foynes that may be implemented after project-level assessment and planning or Exhibition and confirmation might include:.

It went to construction in and has been completed. The works comprise largely of constructing flood defence walls, installing non return valves and some short sections of demountable defence and provide protection to properties against the 0. The proposed further measure for Newcastle West that may be implemented after project-level assessment, planning or Exhibition and confirmation might include:. The Newcastle West works were initiated in following major flooding in August of that year and were constructed from to by the OPW using the provisions of Section 38 of the Arterial Drainage Act that permit improvements to the existing Deel Catchment Drainage Scheme.

The Al River Athlone works were initiated in and constructed from to The proposed measure for Ballinasloe that may be implemented after project-level assessment and planning or Exhibition and confirmation might include;. The Derrymullan Flood works were initiated in following major flooding in the flood event, and constructed from to For queries or advice about claiming compensation due to a road problem, contact DFI Roads claim unit.

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Special waste consignment notes purchase Supporting Scotland's green recovery Waste Carriers - who is registered? Water scarcity What we don't do. For planning applicants, developers, planning authorities etc. Flood Risk Management Maps sepa. A, , Field manual for identifying and preserving high-water mark data: U. Geological Survey Open-File Report —, 67 p. Year Published: Identifying and preserving high-water mark data High-water marks provide valuable data for understanding recent and historical flood events.

Koenig, Todd A. Koenig, T. Geological Survey Techniques and Methods, book 3, chap. A24, 47 p. Year Published: The world's largest floods, past and present: Their causes and magnitudes Floods are among the most powerful forces on earth. O'Connor, Jim E.

Year Published: Mapping a flood before it happens What's missing from flood forecasts? Jones, Joseph L. Year Published: Large floods in the United States: where they happen and why The spatial distribution of large gaged floods throughout the United States shows that the locations of most of the largest flows are related to specific combinations of regional climatology, topography, and basin size. Perry, Charles A. Filter Total Items: 4. Date published: September 18, Date published: February 22, Date published: August 22, Date published: January 14, Filter Total Items: 8.

List Grid. June 30, June 23, February 9, December 14, The USGS April 27,