Omoku in context: Street-network sprawl trends

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Omoku plotted against Rivers and Nigeria. The SNDi of new construction in Omoku peaked in 1976-1990, compared to Rivers which rose steadily and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Omoku's incremental SNDi fell from 3.24 to 3.23 between 1991-2005 and 2006-2020. In terms of the aggregate network, Omoku ranked 2nd out of 28 cities in Rivers and 158th out of 422 in Nigeria as of 2020.

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

What about similarly populated cities?

• Xishui County, China
• Chipata, Zambia
• Tân Châu, Vietnam
• Qingkou, China
• Recanto das Emas, Brazil
• Tabora, Tanzania

In new street additions, Omoku built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Xishui County built increasingly disconnected streets from 1975 through 1991-2005, then improved and Qingkou fluctuated in its street-construction patterns. For the full network, Omoku became progressively more disconnected, while Xishui County grew more disconnected from 1975 through 1991-2005, then improved and Qingkou fluctuated in connectivity. Omoku and Xishui County have been growing further apart in their street-network character since 1975.