HUMAN DOMINATION
NATURAL PROCESS Sea Erosion Natural land
Cultivated land (polder)
Dikes and dams
River (Ijssel) delta Natural gredient under the lake
Ditches for marine traffic and take soil Metropolis (Amsterdam)
Nature domination in the Ijsselmeer
5500 BC
3850 BC
3750 BC
50 AD
800 AD
Design with natural process •
Wind setup and waves
•
Sediment resuspension
•
Seasonal water level change and drifting ice
+0.50m NAP
Summer
+wave 1.1- 1.8m
-0.2 (-0.1)m NAP -0.4 (-0.3)m NAP -0.50m NAP
+1.1m NAP
Winter
Draft Standard 2015 maximum drainage system Ijssel
2400m2/s
+1.1m NAP
+1.4m NAP
+1.4 m NAP
WINTER
+1.6m NAP
+1.6m NAP
+1.6 to +1.7m NAP
+1.6 to +1.7m NAP
+0.50m NAP
Winter
+wave 1.2-1.7m
-0.3m NAP -0.5m NAP -0.50m NAP
Summer
SUMMER