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Dáil Éireann díospóireacht -
Wednesday, 18 Nov 1998

Vol. 496 No. 7

Adjournment Debate. - Flood Relief.

The previous issue is not unrelated to the issue I want to raise. The Minister of State has just discussed the macro aspects of the changes we are seeing but I want to examine a micro incident in an area which is deprived and in need of assistance.

In the past 15 years there have been 27 serious floodings in the village of Dromcollogher, County Limerick. The situation became so serious in September 1997 that Limerick County Council decided to request Gibson O'Connor, Consulting Engineers, to examine and report on the overall problem of flooding in the village.

The village has experienced severe flooding over a prolonged period but the most serious event took place on the night of 26 August and the morning of 27 August 1997. On that occasion flooding disastrously affected the eastern part of the village with several homes in the Pike Street area flooded to a depth of 0.5 metres. Water flowed down the road leading from Carroward townland for the full width of the carriageway and inundated Pike Street and Pound Street in the eastern area of the village. Serious overloading of the combined sewers within the village occurred and raw sewage overflowed onto the streets and into the houses. The matter was reported to the Mid-Western Health Board by a local medical practitioner and the board in turn referred the matter to Limerick County Council.

Flooding also occurred on the west side of the village near the church where the Ahavarraga stream overflowed causing flooding to roads in the vicinity. Downstream of the villages, bridges and culverts backed up and surrounding lands were flooded. The undermining of the abutments of one bridge required immediate emergency reconstruction works.

Neither of the two stream channels flowing through the village of Dromcollogher are capable of discharging the level of flooding which occurred. In particular, the channel capacity of the Carroward stream is totally inadequate in the section which passes through the village. Flood relief works to this channel could be carried out either by the construction of a major culvert through the village or by reverting this stream to the Ahavarraga stream upstream of the village and carrying out channel improvement works in the Ahavarraga stream where it passes through the village.

A major problem exists, however, in the river downstream of Dromcollogher. This was clearly demonstrated by the serious flooding which occurred downstream of the village on 26 and 27 August 1997. At that time, a local structural steel fabrication works was inundated and the village sewage treatment works had to be bypassed with raw sewage overflowing directly into the river. Flooding as high as road level was experienced in the Ahavarraga stream and as far downstream as Moyvane Bridge, some two kilometres below the village.

The report produced by Messrs. Gibson O'Connor states: "The very serious lack of capacity in the river below the bridge results in a backwater effect which significantly contributes to the flooding in the village". It is imperative that the co-operation and assistance of the Office of Public Works be obtained with the objective of carrying out channel improvement works at the earliest possible date.

Will the Minister arrange for that to be done because it is almost two years since the report was submitted to him? Until such time as river improvement work is carried out downstream of Dromcollogher, any flood relief works to channels through the village will not effect significant improvements.

I thank the Minister for coming into the House to respond to this serious issue. It affects a small but significant area in west Limerick close to the Kerry border which will soon have funding that will not be available to alleviate the problem in Dromcollogher.

I thank the Deputy for raising this issue because I have received a number of questions recently about it.

I welcome the opportunity of addressing the problem. Dromcollogher is situated within the River Deel catchment. The Commissioners of Public Works carried out an arterial drainage scheme known as the River Deel catchment drainage scheme which commenced in 1962 and ended in 1968. The main channel was improved from Askeaton in County Limerick to a point three and a half miles south of Milford village in County Cork. In addition, almost 250 kilometres of tributary channels were improved. The streams which flow through Dromcollogher enter the River Deel catchment drainage scheme at channel C23 which is approximately two and a half miles downstream.

As the Deputy said, there have been a significant number of instances of flooding, particularly of roads, recorded in Dromcollogher dating back to 1984 with houses being flooded on some occasions. On the night of 26 August and the morning of 27 August 1997 there was very severe flooding in Dromcollogher. Following this event, Limerick County Council commissioned a firm of consulting engineers to examine the causes of the flooding and to indicate the probable scale of corrective works required.

Their preliminary report indicated that neither of the two stream channels flowing through Dromcollogher are capable of discharging the flood. In fact, the capacity of the Carroward stream is totally inadequate in the section which passes through the village.

The report also indicated that the capacity of the channel immediately downstream needed to be increased because it had a backwater effect which also significantly contributed to flooding in the village. However, these recommended works are outside of the Office of Public Works maintenance responsibilities for the Deel catchment drainage scheme. The backwater effect is not caused by a channel which is maintainable under the scheme. There is a fall of approximately 90 feet in the stream from the village of Dromcollogher to where it enters the maintainable channel.

The 1995 amendment to the 1945 Arterial Drainage Act gave powers to the Commissioners of Public Works to undertake flood relief schemes, where appropriate, for the alleviation of localised flooding. However, the resources of the Commissioners of Public Works are fully committed, for the foreseeable future, to advancing to completion the schemes originally selected for priority attention under the Urban Flood Relief Programme. Consequently, no progress has been made regarding the preparation of a flood relief scheme for Dromcollogher and it is unlikely we will have the resources to do so for some time to come.

While the Arterial Drainage (Amendment) Act, 1995, may give powers to the Commissioners to undertake flood relief schemes for the alleviation of localised flooding, it does not make them liable for the relief of all flooding in the country, nor does it abrogate local authorities from their responsibilities to undertake such schemes within their areas as provided under the Local Authorities (Works) Act, 1949.

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