A man's body has been recovered from Logue Brook Dam, near Harvey.
It is understood the man, aged in his 30s, was on a sea biscuit being towed behind a boat on Saturday afternoon when he fell off and disappeared beneath the surface.
Police and the RAC rescue helicopter were called to help find the man, but the search was suspended overnight.
The man's body was found on Sunday afternoon with the help of police divers.
A report will be prepared for the Coroner.