Location of FLOLIZ and control stations in Serre-Ponçon hydropower reservoir. (A) Location of Serre-Ponçon hydropower reservoir in France; (B) Reservoir contour at the highest water level (altitude 780 m) and location of 3 sampling zones (ellipses); (C) Focus on the 3 zones (suffixed 1, 2 and 3) with control stations and FLOLIZ. DCS: Distant Control Station, NCS: Nearby Control Station, FLOLIZ: Floating Littoral Zone.