Catchment News

Hydrology Summary Bulletin – December 2023

The Hydrology bulletin on rainfall, river flows, lake levels, groundwater levels and spring outflows for December 2023 has been published.


Very mild, wet and stormy, December 2023 was dominated by Atlantic low pressure systems with four named storms affecting Ireland.

The monthly average river flows for December remained high, with 59% of river flows above the long-term normal for December, while 66% of lake and turlough monitoring stations observed levels above the long-term normal range for this month also.

Although average monthly groundwater levels decreased compared to November, 54% of monitoring wells recorded levels above the long-term average for December.

Similarly, spring flows remained high with five of six monitoring stations in the ‘above normal’ range.

Learn more:–assessment/freshwater–marine/hydrology-bulletin/hydrology-bulletin/hydrology-summary-bulletin—december-2023.php

Figure 1: Percentage distribution of river flow monitoring sites within each of the percentile flow categories for December 2023.
Figure 2: Percentage distribution of lake and turlough level monitoring sites within each of the percentile flow categories for December 2023.
Figure 3: Percentage distribution of groundwater level sites within each of the percentile flow categories for December 2023.

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.