Al-Qadisiyah: region in Iraq
What exactly constitutes the spatial extent of the city? For these aggregations, we used the Global Human Settlement Layer Urban Center Database (GHS-UCDB) to define the boundaries of the city. These cities -- or urban centers -- cover areas that are densely populated and built-up, and so may extend beyond the spatial borders of these cities that we may be familiar with. The GHS area is shaded in blue.
View Al-Qadisiyah, Iraq on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Al-Qadisiyah as of 2014, the overall level of street-network sprawl is 2.0, which is relatively well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 2.06, 1.48, 1.52 and 2.73. The disconnectivity of new streets constructed in Al-Qadisiyah fell, then rose. In 1976-1990, new street layouts were the most connected.
Quantity of street network construction: The street network in Al-Qadisiyah spans a total of 2814 kilometers. The period with the greatest volume of street construction was 2001-2014. These roads have an SNDi of 2.73, which is in the 40th to 60th percentile of disconnectedness.
Effect on the aggregate network: New construction in each period adds to the total stock of streets, but does not change streets that have already been built. Therefore, it has a limited effect on the street network as a whole. The SNDis of the aggregate street network in the respective time periods are 2.06, 1.69, 1.64 and 2.0. The SNDi of the aggregate street network in fell at first, but Al-Qadisiyah has worsened in disconnectivity since 2000.
The level of street-network sprawl in new development in Al-Qadisiyah was at its lowest in 1976-1990. To get a sense of how street development has changed in Al-Qadisiyah, we can consider three of its most populous cities: Ad Diwaniyah, Ash Shamiya and Al-Manathera. Out of the three cities, Ash Shamiya and Al-Manathera do not follow the same trend as the region. The level of street-network sprawl in new development in Ash Shamiya followed a zig-zag trend. The level of street-network sprawl in new development in Al-Manathera peaked in 1976-1990.
How do development practices in Al-Qadisiyah fare in comparison to others in Iraq? Most recently in 2001-2014, street construction in Al-Qadisiyah was the 9th-most disconnected out of the 18 regions in Iraq. Its position in the ranks since 1975 has risen; relative to other regions in Iraq, street construction in Al-Qadisiyah has become more disconnected. Al-Qadisiyah ranked 13th in 1975, 13th in 1976-1990, 16th in 1991-2000 and 9th in 2001-2014.
As of 2014, the city with the most disconnected street network in Al-Qadisiyah is Ghammas with an SNDi of 1.65, which is relatively well-connected. Conversely, the most connected city is Ash Shamiya with an SNDi of -0.28, which is very well-connected. See trends for these cities: Ash Shamiya, Ghammas
The level of street-network sprawl in the aggregate network in Al-Qadisiyah was at its lowest in 1991-2000. To get a sense of how the aggregate street network has changed in Al-Qadisiyah, we can consider three of its most populous cities: Ad Diwaniyah, Ash Shamiya and Al-Manathera. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Ad Diwaniyah was at its lowest in 1976-1990. The level of street-network sprawl in the aggregate network in Ash Shamiya followed a zig-zag trend. The level of street-network sprawl in the aggregate network in Al-Manathera peaked in 1976-1990.
To date, Al-Qadisiyah is the 13th-most disconnected out of the 18 regions in Iraq. Its position in the ranks since 1975 has not changed. Al-Qadisiyah ranked 13th in 1975, 13th in 1976-1990, 13th in 1991-2000 and 13th in 2001-2014.