Inland Fisheries Ireland scrutinised 2,000-plus fish kills in Irish rivers and lakes from 1969 to 2022
Rivers are the waterbody type most impacted by fish kills at 81 per cent, followed by lakes and artificial waterbodies such as ponds and canals .
The most common known cause of fish deaths after agriculture was eutrophication, which is when algal blooms and excessive plant growth deplete dissolved oxygen in the water.Oasis gigs: ‘Technical error’ led to cancellation of Manchester hotel bookings, says DalataSeparately, the report shows that almost 19,000 fish died in 30 recorded fish-kill occurrences between January 2023 and July 2024. Fish mortalities included Atlantic salmon, trout, eel and lamprey of all ages.
The Department of the Environment is carrying out a review of inland fisheries legislation. Existing sanctions are being examined, and it would include a potential update of penalties in respect of fishery, environmental and other offences. Fish-kill hotspots were prevalent in the east, south and north midlands, coinciding with intensive agricultural activity and large urban centres.
Many peaks in fish kills coincided with heatwave and drought events. Official heatwave events were recorded in the summers of 1976, 1983, 1989, 1995, 2003, 2006, 2013, 2018 and 2022.
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