(160117) -- CAUCA, Jan. 17, 2016 (Xinhua) -- Undated image shows two men jumping on the rocks in the Cauca River which evidence its flow loss, on its way by the city of Popayan, capital of Cauca department, Colombia. Although rains have been registered this week and partly relieve the drought in some rivers of the country, the basins of the rivers Magdalena and Cauca remain the most affected by the season of El Nioo, according to information from the Institute of Meteorology, Hydrology and Environmental Studies (IDEAM, for its acronym in Spanish) of Colombia. (Xinhua/Oswaldo Paez/COLPRENSA) (jp) (fnc)