Sluice Klecany, Lock on the Vltava River in Roztoky, Czech Republic

Sluice Klecany is a lock on the Vltava River near Roztoky, south of Prague. The structure features large metal gates operated from a control building on the riverbank, along with an adjacent boat lock that moves vessels over changes in river level.

The sluice was built between 1897 and 1899 as the first structure of the Vltava waterway and opened in 1899. After damage from a flood in 1975, a new modern lock with hydraulic gates was constructed to improve vessel passage.

The name Klecany comes from the surrounding area, which has long been connected to river navigation and local life. Today, visitors can see how the lock remains part of daily activity, as people watch boats pass through and locals pause along the riverbank to enjoy the flowing water and passing vessels.

The lock operates daily from 7:00 to 17:00; passage between 6:30 and 7:00 or 17:00 and 18:00 must be arranged in advance by phone at 220 911 730. The upper canal is 936 m long and the lower canal 116 m, with two chambers in sequence. The service building from 1897 stands by the lock.

The walls of the control building display marks from over 100 years of flood water levels, a silent record of the region's flood history. These markings let visitors understand the river's power during extraordinary times and trace important events like the major flood of 2002.