Delta Works needed level of flood protection and the resulting costs are a recurring subject of debate, and involve a complicated decision-making process. In 1995 it was agreed in the Delta Plan Large Rivers and Room for the River projects that about 500 kilometres of insufficient dyke revetments were reinforced and replaced along the Oosterschelde and Westerschelde between 1995 and 2015. After 2015, under the High Water Protection Program, additional upgrades are made. In September 2008, the Delta Commission presided by politician Cees Veerman advised in a report that the Netherlands would need a massive new building program to strengthen the country's
Flooding of the Nile its function as their gateway to the unknown world. The Nile flows from south to north, to its delta on the Mediterranean Sea. The floods were seen as the annual coming of the god. Possibly Egyptian mythology was based on this understanding, creating stories of gods or nature to give added importance to the processes and cycles that sustained Egypt. Whilst the earliest Egyptians simply laboured those areas which were inundated by the floods, some 7000 years ago, they started to develop the basin irrigation method. Agricultural land was divided into large fields surrounded by dams and dykes and equipped