For centuries, the Dutch landscape and her inhabitants have been connected to the water, sometimes lovingly, sometimes full of fear and often with awe. This is also reflected in the theme of this doctoral research: late medieval storm surges of the Zuiderzee on the one hand caused the loss of land and settlements in the heart of the Netherlands, while on the other hand these floods created new maritime trade routes that would eventually bring great wealth. The current research focuses more specifically on reconstructing (the development of) the landscape and habitation in the northeastern part of the Zuiderzee (the current Noordoostpolder) between approximately 1100 and 1400 AD. The research shows that in less than 500 years the research area transformed from unexplored and uninhabited peat areas with lakes into open sea, removing virtually all remnants of land reclamation, cultivation and habitation.