Updated IFI statement re fish kill at River Blackwater, Co Cork

Inland Fisheries Ireland (IFI) is continuing to investigate a large fish kill in Co. Cork.

Present indications suggest there are now between 8,000 and 10,000 wild fish mortalities – mainly brown trout - recorded over an 18km stretch of river.

This is based on IFI observations and data submitted by local stakeholders.

Sean Long, Director of IFI’s South-Western River Basin District, commented: “The Marine Institute, the competent authority for fish health in Ireland, conducted diagnostic sampling of affected fish on site on August 14th at Mallow. 

“IFI expects to receive a related report within 20 days of that date.

“Disease outbreaks can occur in wild fish populations and are influenced by numerous factors including environmental change.

“No evidence of a polluting or harmful discharge has been detected to date in the river.”

IFI continues to consult with Uisce Éireann, the EPA, Cork County Council and the Marine Institute on the matter.

The Marine Institute’s Fish Health Unit has advised the removal of dead fish from the water is not necessary.

IFI officers will continue to monitor the watercourse in the coming days to further assess the incident.

Affected trout were observed in the River Blackwater circa 6km downstream of Mallow, and up to 12km upstream of Mallow.

They have also been seen at the Awbeg river, and the Clyda river, which joins the Blackwater west of Mallow. 

IFI continues to appeal to people to report instances of fish kills to its 24-hour confidential phoneline, 0818 34 74 24.