Birkenhead man Barry O'Reilly, 37, died after an incident at Claremont Farm on Clatterbridge Old Road in Spital, Wirral, on 15 May.
Christopher Davies, 28, of Town Lane, Higher Bebington, pleaded not guilty via videolink at Liverpool Crown Court.
He was further remanded in custody to await trial on 7 November.
Merseyside Police said a post-mortem examination found the preliminary cause of Mr O'Reilly's death was drowning.
A man charged with murder following an alleged fight at a fishing lake in Merseyside has pleaded not guilty.