Lock at Cothen
The water board uses the dam in the Kromme Rijn in Cothen to regulate the flow of water to and from Utrecht. The monumental lock alongside it (from 1865) was used during wartime to move ships past the dam. When the Waterline needed to be flooded, the commander of the inundation station at Wijk bij Duurstede first gave the order to raise the water level in the Kromme Rijn by closing off the lock with stop logs. Next, he ordered the stop logs to be removed so that a large body of water could flow from the open lock to Utrecht.