Koryčany Reservoir, reservoir in Koryčany, Czech Republic

Koryčany Reservoir is a large water storage facility near the town of Koryčany in the Czech Republic, created by an earth dam with a clay core. The water surface covers about 35 hectares and serves primarily for drinking water supply and flood control, with the entire area under strict hygiene protection.

The dam was built in the 1950s and began operation in 1959 as an important step for water management in the region. For decades it has served to store water and protect against flooding, with sediment removal carried out in recent years to maintain its performance.

The reservoir lies about 2 km northeast of Koryčany and 2 km west of Stupava on the Kyjovka river, in the western part of the Chřiby hills. Because the water is used for drinking, swimming and recreation are banned and the whole reservoir sits in a first-degree hygiene protection zone. Water-gauge stations stand above and below the dam.

A small hydroelectric plant with a Bánki turbine was once built for power generation but has been disassembled for many years. This hidden technical history shows how dams were originally used for multiple purposes before focusing solely on water storage.