Lac de la Vierre, lac belge
Lac de la Vierre is an artificial reservoir near Ciney created by flooding about 25 hectares of land. Water reaches it through an underground pipeline that connects two rivers and passes beneath the Semois.
Construction of the reservoir began in 1963 and took two years, with crews blasting an 827 meter underground gallery. The project was designed to harness water power for electricity generation while creating a recreational space for the region.
The lake takes its name from the Vierre river, one of the waterways that feeds it. The shores have become a gathering place for fishers and walkers seeking quiet time in nature.
The lake is easily reached on foot with walking paths around the shoreline for leisurely strolls. Visitors should wear sturdy shoes and be prepared for variable weather, especially during early morning or evening hours.
Water is fed through an underground pipeline connecting two separate rivers while passing beneath a third, an ingenious engineering solution from the 1960s. This hidden infrastructure allows the lake to maintain consistent water levels even during dry periods.
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