Zwammerdam is a village in the Dutch province of South Holland along Oude Rijn river. It is a part of the municipality of Alphen aan den Rijn, and lies about 6 km southeast of Alphen aan de Rijn. The name derives from a dam built in the Rhine river in 1165 AD by Count Floris III of Holland, to protect the land stream downwards from floods.
Centre of Zwammerdam
Kerklaan
Windmill for waterpumping
Oude Rijn at Zwammerdam
Oude Rijn (Utrecht and South Holland)
The Oude Rijn is a branch of the Rhine delta in the Dutch provinces of Utrecht and South Holland, starting west of Utrecht, at Harmelen, and running by a mechanical pumping station into the North Sea at Katwijk. Its present-day length is 52 kilometres.
The Oude Rijn in Leiden
Windmill Zoeterwoude
Castellum Nigrum Pullum (Zwammerdam) at Rhine river, artist impression Stevie Xinas
Satellite close-up of the Utrecht region showing the Leidse Rijn-Oude Rijn stream (d).