Hiiraan: region in Somalia
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 Hiiraan, Somalia on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Hiiraan as of 2014, the overall level of street-network sprawl is 3.65, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 5.49, 4.71, 4.29 and 1.93. In each period, new street development in Hiiraan steadily grows more connected than in the last. This decrease has quickened: between 1975 and 1976-1990, SNDi fell by 0.78 points, but between 1991-2000 and 2001-2014, it fell by just 2.36.
Quantity of street network construction: The street network in Hiiraan spans a total of 1669 kilometers. The period with the greatest volume of street construction was 2001-2014. These roads have an SNDi of 1.93, which is relatively well-connected.
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 5.49, 4.96, 4.8 and 3.65. Overall, the SNDi of the aggregate street network has fallen: the street network in Hiiraan has become more connected. This decrease has quickened: between 1975 and 1976-1990, SNDi fell by 0.52 points, but between 1991-2000 and 2001-2014, it fell by just 1.15.
The level of street-network sprawl in new development in Hiiraan fell steadily. To get a sense of how street development has changed in Hiiraan, we can consider one of its most populous cities: Beledweyne. Disconnectivity in the most populous cities in Hiiraan follow the same region trend.
How do development practices in Hiiraan fare in comparison to others in Somalia? Most recently in 2001-2014, street construction in Hiiraan was the 10th-most disconnected out of the 16 regions in Somalia. Its position in the ranks since 1975 has fallen; relative to other regions in Somalia, street construction in Hiiraan has become more connected. Hiiraan ranked 3rd in 1975, 1st in 1976-1990, 5th in 1991-2000 and 10th in 2001-2014.
As of 2014, the city with the most disconnected street network in Hiiraan is Beledweyne with an SNDi of 2.46, which is in the 40th to 60th percentile of disconnectedness. Conversely, the most connected city is Beledweyne with an SNDi of 2.46, which is in the 40th to 60th percentile of disconnectedness. See trends for these cities: Beledweyne, Beledweyne
The level of street-network sprawl in the aggregate network in Hiiraan fell steadily. To get a sense of how the aggregate street network has changed in Hiiraan, we can consider one of its most populous cities: Beledweyne. Disconnectivity in the most populous cities in Hiiraan follow the same region trend.
To date, Hiiraan is the 2nd-most disconnected out of the 16 regions in Somalia. Its position in the ranks since 1975 has risen; relative to other regions in Somalia, the street network in Hiiraan has become more disconnected. Hiiraan ranked 3rd in 1975, 2nd in 1976-1990, 2nd in 1991-2000 and 2nd in 2001-2014.