Umm Qasr in context: Street-network sprawl trends

Umm Qasr in context

2.733.33.6<19751976–19901991–20052006–2020SNDi of street additions
2.733.33.6<19751976–19901991–20052006–2020SNDi of entire street network
Umm QasrAl-Basrah (Region)Iraq (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Umm Qasr plotted against Al-Basrah and Iraq. While Al-Basrah and Iraq both peaked in 1976-1990, Umm Qasr's new street additions peaked in 1976-1990. Most recently, Umm Qasr's incremental SNDi fell from 3.06 to 3.04 between 1991-2005 and 2006-2020. In terms of the aggregate network, Umm Qasr ranked 4th out of 5 cities in Al-Basrah and 66th out of 86 in Iraq as of 2020.

New Street Additions (2006–2020)

SNDi value
3.04
Rank in Iraq
58th of 86
Rank in Al-Basrah
3rd of 5

Entire Network (Aggregate)

SNDi value
3.0
Rank in Iraq
66th of 86
Rank in Al-Basrah
4th of 5

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

What about similarly populated cities?

1.42.12.83.5<19751976–19901991–20052006–2020SNDi of street additions
1.42.12.83.5<19751976–19901991–20052006–2020SNDi of entire street network
Umm QasrDarou KhoudossCedar Rapids

In new street additions, Umm Qasr built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Darou Khoudoss built increasingly disconnected streets over time and Cedar Rapids built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full street network, though, all three cities follow the same trend.