Ogale in context: Street-network sprawl trends

Ogale in context

2.73.64.55.4<19751976–19901991–20052006–2020SNDi of street additions
2.73.64.55.4<19751976–19901991–20052006–2020SNDi of entire street network
OgaleRivers (Region)Nigeria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Ogale plotted against Rivers and Nigeria. The SNDi of new construction in Ogale rose steadily, compared to Rivers which rose steadily and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Ogale's incremental SNDi rose from 4.21 to 4.5 between 1991-2005 and 2006-2020. In terms of the aggregate network, Ogale ranked 9th out of 28 cities in Rivers and 276th out of 422 in Nigeria as of 2020.

New Street Additions (2006–2020)

SNDi value
4.5
Rank in Nigeria
232nd of 422
Rank in Rivers
6th of 28

Entire Network (Aggregate)

SNDi value
3.71
Rank in Nigeria
276th of 422
Rank in Rivers
9th of 28

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

What about similarly populated cities?

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
OgaleDiyarb NigmRajnandgaon

In new street additions, Ogale and Diyarb Nigm both built increasingly disconnected streets over time, while Rajnandgaon fluctuated in its street-construction patterns. For the full street network, though, all three cities follow the same trend. Ogale and Diyarb Nigm have been growing further apart in their street-network character since 1975.