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Hydrology Summary Bulletin – April 2025

Hydrology Summary Bulletin outlining the flows in rivers, rainfall, lake and turlough levels, groundwater levels and spring outflows of over 300 stations across Ireland for the month.

April 2025 was warm and dry for the first half of the month and wet for the second half, especially in the
midlands, south and east. The wettest period of the month was Wednesday 16th to Saturday 19th, this was followed by further bands of rain or showers, sometimes heavy, up to Saturday 26th. High pressure to the east began to take control once again and led to record breaking maximum temperatures for April being reported on the final day of the month.
Although the monthly average river flows increased in April when compared to March, 28% of river flows
were below the normal long-term range. Groundwater levels and lake levels decreased in April with 67% of groundwater levels and 81% of lake levels below the normal long-term range. Out of the four spring flows monitored, 1 was in the normal range, 1 was in the ‘below normal’ range and 2 were ‘particularly low’.

Monthly Hydrology Bulletin – April 2025

EPA-Hydrology-Bulletin-April-2025 Download

Hydrology Summary Bulletin – March 2025

Hydrology Summary Bulletin – February 2025

Hydrology Summary Bulletin – January 2025

About author

EPA Catchments Unit

Administrator

The EPA Catchments Unit is based in Dublin, and the team is involved with catchment science, chemistry, ecology, hydromorphology, modelling, Geographic Information Systems and planning. We work with the wider EPA, all of our local authorities, the Local Authority Waters and Communities Office, the Department of Housing, Planning and Local Government, and other public bodies and Departments to ensure we have the best available data and information about our catchments.

Who is involved?
Quite simply, everyone in Ireland has a role to play. This can be from something as simple as making sure you don’t pollute your local stream, or a local community working together to establish a Rivers Trust to enhance the rivers and lakes in their area, to a Government Department or Agency helping a Minister implement a new policy to help protect and enhance all our water bodies.

This website has been developed and is maintained by the Environmental Protection Agency, and is a collaboration between the Department of Housing, Planning and Local Government, the Environmental Protection Agency, and the Local Authority Waters Programme.

Local Authority Waters Programme

The Local Authority Waters Programme coordinates the efforts of local authorities and other public bodies in the implementation of the River Basin Management Plan, and supports local community and stakeholder involvement in managing our natural waters, for everyone’s benefit.

Environmental Protection Agency

The EPA is responsible for coordinating the monitoring, assessment and reporting on the status of our 4,842 water bodies, looking at trends and changes, determining which waterbodies are at risk and what could be causing this, and drafting environmental objectives for each.

Department of Housing, Local Government and Heritage

The Department is responsible for making sure that the right policies, regulations and resources are in place to implement the Water Framework Directive, and developing a River Basin Management Plan and Programme of Measures to protect and restore our waters.