Assaba: region in Mauritania
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 Assaba, Mauritania on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Assaba as of 2014, the overall level of street-network sprawl is 2.92, which is in the 40th to 60th percentile of disconnectedness.
Trends in street network construction: The SNDis of street construction for the respective time periods are 9.55, 3.15, 2.31 and 2.43. The disconnectivity of new streets constructed in Assaba fell, then rose. In 1991-2000, new street layouts were the most connected.
Quantity of street network construction: The street network in Assaba spans a total of 785 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 3.15, 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 9.55, 3.47, 3.27 and 2.92. Overall, the SNDi of the aggregate street network has fallen: the street network in Assaba has become more connected.
The level of street-network sprawl in new development in Assaba was at its lowest in 1991-2000. To get a sense of how street development has changed in Assaba, we can consider one of its most populous cities: Kiffa. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Kiffa followed a zig-zag trend.
How do development practices in Assaba fare in comparison to others in Mauritania? Most recently in 2001-2014, street construction in Assaba was the 3rd-most disconnected out of the 6 regions in Mauritania. Its position in the ranks since 1975 has fallen; relative to other regions in Mauritania, street construction in Assaba has become more connected. Assaba ranked 1st in 1975, 2nd in 1976-1990, 2nd in 1991-2000 and 3rd in 2001-2014.
As of 2014, the city with the most disconnected street network in Assaba is Kiffa with an SNDi of -0.8, which is very well-connected. Conversely, the most connected city is Kiffa with an SNDi of -0.8, which is very well-connected. See trends for these cities: Kiffa, Kiffa
The level of street-network sprawl in the aggregate network in Assaba fell steadily. To get a sense of how the aggregate street network has changed in Assaba, we can consider one of its most populous cities: Kiffa. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Kiffa followed a zig-zag trend.
To date, Assaba is the 2nd-most disconnected out of the 6 regions in Mauritania. Its position in the ranks since 1975 has fallen; relative to other regions in Mauritania, the street network in Assaba has become more connected. Assaba ranked 1st in 1975, 2nd in 1976-1990, 2nd in 1991-2000 and 2nd in 2001-2014.