The Rangère dam (or dike) is located on the Dragne. It was built in the 1950s to supply fresh water to the surrounding communes, including Moulins-Engilbert and St-Honoré-les-Bains. Before, there was a small reservoir upstream. The construction of the dam is of the "landscape dam" type. The natural site is classified. Along the road there are quarries used for construction. An electricity production is located at the foot of the dam.