| Water | Type | % Correct |
|---|---|---|
| Meuse | Maas | River | 100%
|
| Nieuwe Maas | River | 100%
|
| Oude Maas | River | 100%
|
| IJ | River | 96%
|
| IJssel | River | 96%
|
| Nederrijn | River | 96%
|
| Rhine | River | 93%
|
| Rijn | River | 93%
|
| IJsselmeer | Lake | 91%
|
| Kromme Rijn | River | 91%
|
| Leidse Rijn | River | 91%
|
| Oude Rijn | River | 91%
|
| Wadden Sea | Sea | 89%
|
| North Sea | Sea | 88%
|
| Waal | River | 84%
|
| Markermeer | Lake | 75%
|
| Western Scheldt | Estuary | 68%
|
| Eastern Scheldt | Estuary | 66%
|
| Lek | River | 61%
|
| Amsterdam-Rhine Canal | Canal | 54%
|
| Scheldt | River | 54%
|
| Lauwersmeer | Lake | 43%
|
| Veluwemeer | Lake | 39%
|
| Hollands Diep | River | 38%
|
| Gooimeer | Lake | 36%
|
| North Sea Canal | Canal | 36%
|
| Dollard | Bay | 34%
|
| Haringvliet | Inlet | 34%
|
| Ketelmeer | Lake | 32%
|
| IJmeer | Lake | 30%
|
| Grevelingen | Estuary | 29%
|
| Vecht | River | 27%
|
| Merwede | River | 25%
|
| Eemmeer | Lake | 23%
|
| Ems | River | 21%
|
| Veerse Meer | Lagoon | 16%
|
| Volkerak | Estuary | 13%
|
| Scheldt-Rhine Canal | Canal | 9%
|