Thiès: region in Senegal
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 Thiès, Senegal on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Thiès as of 2014, the overall level of street-network sprawl is 1.14, which is relatively well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 0.47, 0.97, 0.83 and 1.55. Disconnectivity in street construction in Thiès follows a zig-zag trend. In 1975, street construction was most disconnected, while construction was most connected in 2001-2014.
Quantity of street network construction: The street network in Thiès spans a total of 5620 kilometers. The period with the greatest volume of street construction was 1976-1990. These roads have an SNDi of 0.97, 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 0.47, 0.89, 0.89 and 1.14. Disconnectivity in Thiès's street network follows a zig-zag trend. In 1975, the region was most disconnected; while it was most connected in 2001-2014.
The level of street-network sprawl in new development in Thiès followed a zig-zag trend with an overall increase. To get a sense of how street development has changed in Thiès, we can consider three of its most populous cities: MBour, Thiès and Tivaouane. Out of the three cities, MBour and Thiès do not follow the same trend as the region. The level of street-network sprawl in new development in MBour rose steadily. The level of street-network sprawl in new development in Thiès was at its lowest in 1976-1990.
How do development practices in Thiès fare in comparison to others in Senegal? Most recently in 2001-2014, street construction in Thiès was the 7th-most disconnected out of the 13 regions in Senegal. Its position in the ranks since 1975 has not changed. Thiès ranked 7th in 1975, 7th in 1976-1990, 10th in 1991-2000 and 7th in 2001-2014.
As of 2014, the city with the most disconnected street network in Thiès is Tivaouane with an SNDi of 1.1, which is relatively well-connected. Conversely, the most connected city is MBour with an SNDi of 0.44, which is very well-connected. See trends for these cities: MBour, Tivaouane
The level of street-network sprawl in the aggregate network in Thiès followed a zig-zag trend with an overall increase. To get a sense of how the aggregate street network has changed in Thiès, we can consider three of its most populous cities: MBour, Thiès and Tivaouane. Out of the three cities, MBour and Thiès do not follow the same trend as the region. The level of street-network sprawl in the aggregate network in MBour rose steadily. The level of street-network sprawl in the aggregate network in Thiès was at its lowest in 1976-1990.
To date, Thiès is the 8th-most disconnected out of the 13 regions in Senegal. Its position in the ranks since 1975 has fallen; relative to other regions in Senegal, the street network in Thiès has become more connected. Thiès ranked 7th in 1975, 7th in 1976-1990, 8th in 1991-2000 and 8th in 2001-2014.