Floods

Things are not good on my allotment. We have had so much rain here in the UK that the river Thames is in flood. My plot is under 64cm of water. What I am worried about is my fruit tress and fruit bushes. I do no know how long they can survive with their roots under water. The cabbages and roots will be allright. When the floods gone down I will hang my cabbages upside down in my shed. They should last for weeks like that.