It is therefore in the canton of Valais, and it would naturally drain into the river Rhône in the valley below. However a dam has been constructed to enable its use as a reservoir, increasing its size and raising its level by .
The location is in the canton of Valais, where it naturally flows into the Rhône River below. However, a dam has been installed to make use of it as a reservoir, enhancing its size and raising its level by .