The OPW carried out a number of Arterial Drainage Schemes on catchments under the Arterial Drainage Act, 1945. Under section 37 of the 1945 Act, the OPW is required to maintain drainage works in proper repair and effective condition. This work is organised on a regional basis, with headquarters in Limerick, Headford, Co. Galway and Trim, Co. Meath.
Read more about Maintaining Certain River Channels and Environmental Management
A list of the major completed Arterial Drainage Schemes carried out by OPW can be found below.
Table 2. OPW Completed Major Arterial Drainage Schemes
Duration of Works
Tuilleadh Níos lú
Benefitting Area (Acres)
Tuilleadh Níos lú
Offaly, Westmeath, Laois
Tuilleadh Níos lú
1948 - 55
Tuilleadh Níos lú
Glyde and Dee
Tuilleadh Níos lú
Louth, Meath, Monaghan, Cavan
Tuilleadh Níos lú
1950 - 57
Tuilleadh Níos lú
1951 - 59
Tuilleadh Níos lú
Corrib-Clare
Tuilleadh Níos lú
Galway, Mayo, Roscommon
Tuilleadh Níos lú
1954 - 64
Tuilleadh Níos lú
Owenogarney
Tuilleadh Níos lú
1955 - 59
Tuilleadh Níos lú
Tipperary, Offaly
Tuilleadh Níos lú
1955 - 60
Tuilleadh Níos lú
Deel and Swillyburn
Tuilleadh Níos lú
1957 - 61
Tuilleadh Níos lú
1958 - 60
Tuilleadh Níos lú
Ballyteigue / Kilmore
Tuilleadh Níos lú
1959 - 61
Tuilleadh Níos lú
1959 - 63
Tuilleadh Níos lú
1959 - 63
Tuilleadh Níos lú
Westmeath, Longford, Meath, Cavan
Tuilleadh Níos lú
1960 - 68
Tuilleadh Níos lú
Mayo, Sligo, Roscommon
Tuilleadh Níos lú
1960 - 71
Tuilleadh Níos lú
Broadmeadow and Ward
Tuilleadh Níos lú
Meath, Dublin
Tuilleadh Níos lú
1961 - 64
Tuilleadh Níos lú
Swilly, etc.
Tuilleadh Níos lú
1961 - 68
Tuilleadh Níos lú
Killimor / Cappagh
Tuilleadh Níos lú
1962 - 68
Tuilleadh Níos lú
Limerick, Cork
Tuilleadh Níos lú
1962 - 68
Tuilleadh Níos lú
1962 - 71
Tuilleadh Níos lú
Leitrim, Sligo
Tuilleadh Níos lú
1963 - 65
Tuilleadh Níos lú
Corrib-Headford
Tuilleadh Níos lú
Galway, Mayo
Tuilleadh Níos lú
1967 - 73
Tuilleadh Níos lú
Owenavarragh
Tuilleadh Níos lú
1968 - 70
Tuilleadh Níos lú
Carrigahorrig
Tuilleadh Níos lú
Tipperary, Offaly
Tuilleadh Níos lú
1968 - 71
Tuilleadh Níos lú
Meath, Westmeath, Louth, Cavan, Kildare, Offaly
Tuilleadh Níos lú
1969 - 86
Tuilleadh Níos lú
1970 - 73
Tuilleadh Níos lú
Limerick, Tipperary, Cork
Tuilleadh Níos lú
1973 - 86
Tuilleadh Níos lú
Corrib-Mask-Robe
Tuilleadh Níos lú
Mayo, Galway
Tuilleadh Níos lú
1979 - 86
Tuilleadh Níos lú
Roscommon, Sligo, Mayo
Tuilleadh Níos lú
1982 - 92
Tuilleadh Níos lú
Leitrim, Sligo
Tuilleadh Níos lú
1982 - 92
Tuilleadh Níos lú
Monaghan Blackwater
Tuilleadh Níos lú
1984 - 92
Tuilleadh Níos lú
An online map of the country with detailed information on the location of OPW Arterial Schemes can be found on floodinfo.ie
Drainage Districts, which are the responsibility of Local Authorities to maintain, are also shown on the map.
Drainage Map