Aerial view lush green sunlit Ter river woodland valley, Sau reservoir during low water shortage, Catalan

aerial view lush green sunlit ter river woodland valley sau reservoir low water shortage catalan vilanova de sau waterway panta de sau drought emptiness deficiency dense scenery tranquil calmness sunlight forest spain dam hydroelectric treatment rural catalonia rocky peaceful cliff landscape scenic hill picturesque environmental freshness wilderness environment calm quiet clean wild empty river bank