Lough Neagh levels

Numerous rivers flow into Lough Neagh which in turn discharges to the sea via the Lower Bann River. The Lough Neagh catchment drains 43 per cent of the land area of Northern Ireland, as well as some border areas in the Republic of Ireland.

Lough Neagh

Requirements of the Agency

The Agency is required to regulate and control water levels in Lough Neagh within a specified range, that is 12.450 metres to 12.600 metres Ordnance Datum, as defined in the Lough Neagh Levels Scheme (1955) (as amended).

Water levels in the lough are controlled by means of flood gates at Toome at the head of the Lower Bann river. Further control within the Lower Bann River is managed by two sets of flood gates. These are located at Portna (near Kilrea), and The Cutts at Coleraine.

The channel in the Lower Bann River, downstream of Lough Neagh, tends to impede the rate of outflow from the lough during periods of heavy rainfall. At such times the floodgates at Toome are fully opened, where possible, in advance of an anticipated rise in water level.

Lough Neagh level

Date Level
Monday 27 February 2017 12.545m OD Belfast

The current level is 55mm below high statutory maximum.

All five gates at Toome are open all clear to vent flow and lower Lough level. 

Rivers Agency will not be responsible for any loss or damage whatsoever arising from the use or interpretation of this information.

For queries please contact our Coleraine Office. The office is open Monday to Friday from 9.00 am to 5.00 pm.

Contact details for the Coleraine office

District Council areas covered by this office:

  • Ballymoney
  • Coleraine
  • Limavady
  • Londonderry
  • Moyle
Rivers Agency Coleraine
37 Castleroe Road
Castleroe
Coleraine
BT51 3RL
Tel: 028 7034 2357
Fax: 028 7032 0628
Email: rivers.coleraine@infrastructure-ni.gov.uk

(Please note all requests for information relating to the location of any watercourses or Rivers Agency apparatus in a specific area should be sent to rivers.registry@infrastructure-ni.gov.uk)

Contact details for Lower Bann navigation

Waterways Ireland has responsibility for the management, maintenance, development and restoration of inland navigable waterways principally for recreational purposes. The waterways under the remit of Waterways Ireland include the Lower Bann.

For information on the Lower Bann navigation contact Waterways Ireland Coleraine office by telephone on 028 7034 4342 by fax on 028 7035 9530 or via the Waterways Ireland website.

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