Ghammas in context: Street-network sprawl trends

Ghammas in context

2.42.733.3<19751976–19901991–20052006–2020SNDi of street additions
2.42.733.3<19751976–19901991–20052006–2020SNDi of entire street network
GhammasAl-Qadisiyah (Region)Iraq (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Ghammas plotted against Al-Qadisiyah and Iraq. The SNDi of new construction in Ghammas rose steadily, compared to Al-Qadisiyah which was at its lowest in 1991-2005 and Iraq which peaked in 1976-1990. Most recently, Ghammas's incremental SNDi rose from 2.88 to 2.9 between 1991-2005 and 2006-2020. In terms of the aggregate network, Ghammas ranked 4th out of 6 cities in Al-Qadisiyah and 44th out of 86 in Iraq as of 2020.

New Street Additions (2006–2020)

SNDi value
2.9
Rank in Iraq
51st of 86
Rank in Al-Qadisiyah
5th of 6

Entire Network (Aggregate)

SNDi value
2.58
Rank in Iraq
44th of 86
Rank in Al-Qadisiyah
4th of 6

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
GhammasIstalefGuemar

In new street additions, Ghammas built increasingly disconnected streets over time, while Istalef built increasingly disconnected streets from 1975 through 1976-1990, then improved and Guemar built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. For the full network, Ghammas became progressively more disconnected, while Istalef grew more disconnected from 1975 through 1976-1990, then improved and Guemar became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Ghammas and Istalef have been converging in their street-network character since 1975.