Kigali number of rainy days experienced during a year, but has also caused an increase in frequency of torrential rains. Strategic Foresight also characterise Rwanda as a fast warming country, with an increase in average temperature of between 0.7 °C to 0.9 °C over fifty years. As of the 2012 Rwandan census, the population of Kigali was 1,132,686, with an urban population of 859,332. At the time of independence in 1962, Kigali had a population of 6,000, consisting primarily of those associated with the Belgian colonial residency. The population grew considerably after it was named as the independent nation's capital, although
Kigali act as a water store and flood protection for the city, although these are under threat from agriculture and development. The central business district (CBD) (known in Kinyarwanda as "mu mujyi") of Kigali lies on Nyarugenge Hill, and was the site of the original city founded by Richard Kandt in 1907. The house that Kandt lived in is now a museum. Geographically, the CBD lies towards the western edge of the built-up area, as the terrain to the east was more suitable for development of the expanding city than the high slopes of Mount Kigali to the west. Several of