The nationally listed Hydroelectric Power Station Roeven, located near Sluis 15, was built in 1920. The turbine of the power station is powered by water that falls 1.8 meters from the Zuid-Willemsvaart into the feed channel connected to the Noordervaart. Traditionally, the electricity generated was used to illuminate the lock, the service houses and some nearby farms. Around 1949 the power station was put out of operation. After a thorough restoration in 1992-1993, the power station was put back into use. It has been supplying green energy ever since.
On the eve of the Second World War, the Noordervaart formed part of the Peel-Raamstelling, a large defense line. The defense also had to be able to use inundation, the intentional flooding of areas. To speed up this process, the capacity of the inlet culvert feeding the feed channel at Sluis 15 was increased. This concrete inlet became approximately two meters wide and one meter deep. Because the inlet is characteristic of the fortification and defense of the Netherlands during the Second World War, it was designated as a national monument under the name "Overlaat S3"