Guéra: region in Chad
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 Guéra, Chad on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Guéra as of 2014, the overall level of street-network sprawl is 4.67, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 6.22, 6.26, 6.32 and 4.17. Street construction in Guéra increased in disconnectivity initially but has since improved. The streets constructed in 1991-2000 were the most disconnected.
Quantity of street network construction: The street network in Guéra spans a total of 2006 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 6.26, which is highly disconnected.
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 6.22, 6.32, 6.16 and 4.67. The aggregate street network in Guéra increased in disconnectivity initially,but the trend has turned around after 1990.
The level of street-network sprawl in new development in Guéra peaked in 1991-2000. To get a sense of how street development has changed in Guéra, we can consider one of its most populous cities: Mongo. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Mongo followed a zig-zag trend with an overall increase.
How do development practices in Guéra fare in comparison to others in Chad? Most recently in 2001-2014, street construction in Guéra was the 3rd-most disconnected out of the 17 regions in Chad. Its position in the ranks since 1975 has fallen; relative to other regions in Chad, street construction in Guéra has become more connected. Guéra ranked 1st in 1975, 2nd in 1976-1990, 3rd in 1991-2000 and 3rd in 2001-2014.
As of 2014, the city with the most disconnected street network in Guéra is Mongo with an SNDi of -0.41, which is very well-connected. Conversely, the most connected city is Mongo with an SNDi of -0.41, which is very well-connected. See trends for these cities: Mongo, Mongo
The level of street-network sprawl in the aggregate network in Guéra peaked in 1976-1990. To get a sense of how the aggregate street network has changed in Guéra, we can consider one of its most populous cities: Mongo. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Mongo peaked in 1991-2000.
To date, Guéra is the 1st-most disconnected out of the 17 regions in Chad. Its position in the ranks since 1975 has not changed. Guéra ranked 1st in 1975, 1st in 1976-1990, 1st in 1991-2000 and 1st in 2001-2014.