This year, Ireland's national hydrology conference has a theme of…
Hydrology Summary Bulletin – June 2020
The EPA runs a national hydrometric monitoring programme which measures the flow in rivers, lake levels and groundwater levels at a network of over 350 stations across Ireland. The data is used for environmental assessment, research, and regulatory purposes.
The EPA are publishing monthly hydrology bulletins. The June 2020 bulletin is now available.
Overview for June 2020
The majority of rainfall stations recorded monthly rainfall totals above their long-term average for June. The highest daily rainfall total was 53.6 mm at Newport, Co Mayo on the 28th (its wettest June day on record (length 60 years)).
During June, most rivers fell below their long-term monthly average flow, with over 59% recording flows below normal for this time of year, mainly in the east, southeast and Shannon regions. Higher rainfall across the west and northwest towards the end of the month allowed most rivers in these regions to recover to normal or above normal flows for June.
Lake and groundwater levels also fell across the country, both to record low levels in some cases, with 80% of the assessed lakes and 73% of groundwater monitoring wells showing below normal levels for June.
Declining groundwater levels observed in some monitored wells across the country indicates a slower response time to the heavy rainfall events experienced towards the end of the month compared to the more rapid response observed in rivers.
River flows, lake & groundwater levels, June 2020
The June issue of the Monthly Hydrology Bulletin and all future issues will be available to download at this link: http://www.epa.ie/water/wm/hydrometrics/bulletins/