Extrême-Nord: region in Cameroon
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 Extrême-Nord, Cameroon on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Extrême-Nord as of 2014, the overall level of street-network sprawl is 1.65, which is relatively well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 1.31, 1.28, 1.78 and 2.27. The disconnectivity of new streets constructed in Extrême-Nord fell, then rose. In 1976-1990, new street layouts were the most connected.
Quantity of street network construction: The street network in Extrême-Nord spans a total of 7521 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 2.27, 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 1.31, 1.27, 1.42 and 1.65. The SNDi of the aggregate street network in fell at first, but Extrême-Nord has worsened in disconnectivity since 1990.
The level of street-network sprawl in new development in Extrême-Nord was at its lowest in 1976-1990. To get a sense of how street development has changed in Extrême-Nord, we can consider three of its most populous cities: Maroua, Mokolo and Yagoua. Out of the three cities, Mokolo and Yagoua do not follow the same trend as the region. The level of street-network sprawl in new development in Mokolo rose steadily. The level of street-network sprawl in new development in Yagoua followed a zig-zag trend.
How do development practices in Extrême-Nord fare in comparison to others in Cameroon? Most recently in 2001-2014, street construction in Extrême-Nord was the 9th-most disconnected out of the 11 regions in Cameroon. Its position in the ranks since 1975 has risen; relative to other regions in Cameroon, street construction in Extrême-Nord has become more disconnected. Extrême-Nord ranked 10th in 1975, 10th in 1976-1990, 10th in 1991-2000 and 9th in 2001-2014.
As of 2014, the city with the most disconnected street network in Extrême-Nord is Banki with an SNDi of 2.21, which is relatively well-connected. Conversely, the most connected city is Moulvoudaye with an SNDi of -1.26, which is very well-connected. See trends for these cities: Moulvoudaye, Banki
The level of street-network sprawl in the aggregate network in Extrême-Nord was at its lowest in 1976-1990. To get a sense of how the aggregate street network has changed in Extrême-Nord, we can consider three of its most populous cities: Maroua, Mokolo and Yagoua. Out of the three cities, Mokolo and Yagoua do not follow the same trend as the region. The level of street-network sprawl in the aggregate network in Mokolo rose steadily. The level of street-network sprawl in the aggregate network in Yagoua followed a zig-zag trend.
To date, Extrême-Nord is the 10th-most disconnected out of the 11 regions in Cameroon. Its position in the ranks since 1975 has not changed. Extrême-Nord ranked 10th in 1975, 11th in 1976-1990, 10th in 1991-2000 and 10th in 2001-2014.