Scores of homes have been evacuated in Aberdeenshire after the River Don burst its banks and the River Ythan threatened to overflow, while people in an area of Aberdeen were advised to leave their properties.
Roads have been closed and trains and flights cancelled in Aberdeen and across the surrounding region as water levels reached record highs.
Abergeldie Castle has stood on the banks of the River Dee, a neighbour to the Queen's Balmoral Estate in Aberdeenshire, for 450 years.
But now the river, swollen by the flood waters from Storm Frank, has eaten into the castle's foundations, forcing the castle's owner John Seton Howard Gordon to leave and threatening to send the whole structure tumbling into the river.
ITV News correspondent Dan Rivers reports.
Scores of homes have been evacuated in Aberdeenshire, with severe flood warnings still in place for Inverurie and Kintore.
Scores of homes have been evacuated in Aberdeenshire after the River Don rose to record levels and burst its banks.
The fierce storms and torrential downpours in the last month of 2015 contributed to the wettest month in the UK since records began.