Kigali International Airport served 135,189 passengers. In 2008, the airport served about 270,000 passengers. In May 2011, the Rwanda CAA announced that Kigali airport will be upgraded to meet the strong demand. Works started in October 2012 and will be completed in May 2014. In 2012, data from Rwanda Civil Aviation Authority shows that passenger traffic through Kigali International Airport grew by 30 per cent to 488,903 last year, up from 377,327 in 2011. The airport handled over 300 flights a week. The airport is designed to handle 400,000 passengers per year. According to last figures, international and domestic passenger numbers were nearly
Kigali three administrative districts—Nyarugenge, which lies in the south west, Kicukiro in the south east, and Gasabo, which occupies the northern half of the city's territory. Kigali lies in a region of rolling hills, with a series of valleys and ridges joined by steep slopes. Kigali lies between the two mountains of Mount Kigali and Mount Jali, both of which have altitudes over , while the lowest areas of the city have an altitude of . Geologically, the city lies in a granitic and metasedimentary region, with lateritic soils on the hills and alluvial soils in the valleys. The Nyabarongo River,