Ngong in context: Street-network sprawl trends

Ngong in context

45678<19751976–19901991–20052006–2020SNDi of street additions
45678<19751976–19901991–20052006–2020SNDi of entire street network
NgongKajiado (Region)Kenya (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Ngong plotted against Kajiado and Kenya. While Kajiado and Kenya both rose steadily, Ngong's new street additions rose steadily. Most recently, Ngong's incremental SNDi rose from 8.13 to 8.44 between 1991-2005 and 2006-2020. In terms of the aggregate network, Ngong ranked 1st out of 2 cities in Kajiado and 42nd out of 45 in Kenya as of 2020.

New Street Additions (2006–2020)

SNDi value
8.44
Rank in Kenya
40th of 45
Rank in Kajiado
1st of 2

Entire Network (Aggregate)

SNDi value
6.15
Rank in Kenya
42nd of 45
Rank in Kajiado
1st of 2

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

481216<19751976–19901991–20052006–2020SNDi of street additions
481216<19751976–19901991–20052006–2020SNDi of entire street network
NgongKumarkhaliEnugu-Ezike

In new street additions, Ngong and Enugu-Ezike both built increasingly disconnected streets over time, while Kumarkhali fluctuated in its street-construction patterns. For the full network, Ngong and Enugu-Ezike both became progressively more disconnected, while Kumarkhali fluctuated in connectivity. Ngong and Kumarkhali have been growing further apart in their street-network character since 1975.