Thousands of acres of farmland in counties Roscommon, Westmeath, Offaly and Galway have been flooded as a result of what the IFA has described as "total mismanagement" of the Shannon waterway.
Torrential rain throughout the country last week saw water levels in the Shannon and lakes along the waterway rise and spill out on to neighbouring farmland.
But IFA Connacht vice president Michael Silke insisted much of the flooding could have been avoided had Waterways Ireland and the ESB opened weir gates on the Shannon sooner.
"The rain had been forecast since early in the week but Waterways Ireland and the ESB did nothing to release water until Friday," he claimed.
The majority of the flooded farmland is located along a 27-mile stretch of the Shannon, from Athlone to Meelick.