Lake Bosméléac, situated in the communes of Merléac, Allineuc, Le Bodéo, and Saint-Martin-des-Prés near Loudéac in the Côtes-d'Armor department, has seen its water level drop by nearly half between May and September 2026. Currently, the lake’s level is approaching 6 meters, which is significantly lower than usual for this time of year. This decline has raised concerns among local residents and environmental experts, as it may affect the ecosystem and recreational activities in the area. The Region of Brittany has taken action to address the situation by limiting the outflow of water from the lake, which is typically used to maintain the water level of a connected river. This measure aims to retain as much water as possible in Lake Bosméléac in the face of insufficient rainfall, which has been lower than expected this season. Officials hope that this intervention will help stabilize the lake’s level and prevent further decline. However, the decision has not been welcomed by all. Local fishermen have expressed concern over the potential impact of reduced water levels on their livelihoods. Lower water levels can affect fish populations, make fishing more difficult, and reduce the overall quality of the habitat. Some are worried that the artificial regulation of water flow could have unintended consequences on the lake’s natural balance. The situation highlights the challenges of managing water resources in the face of climate variability. While the region’s efforts aim to preserve the lake’s water levels, the long-term effects of such measures remain uncertain. Officials are monitoring the situation closely and may adjust their strategy as needed to balance ecological health, water management, and the needs of local communities.