Gombe: region in Nigeria
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 Gombe, Nigeria on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Gombe as of 2014, the overall level of street-network sprawl is 2.12, which is relatively well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 1.86, 1.39, 2.38 and 2.27. Disconnectivity in street construction in Gombe follows a zig-zag trend. In 1976-1990, street construction was most disconnected, while construction was most connected in 1991-2000.
Quantity of street network construction: The street network in Gombe spans a total of 4766 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 2.27, 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 1.86, 1.66, 1.86 and 2.12. The SNDi of the aggregate street network in fell at first, but Gombe has worsened in disconnectivity since 1990.
The level of street-network sprawl in new development in Gombe followed a zig-zag trend with an overall increase. To get a sense of how street development has changed in Gombe, we can consider three of its most populous cities: Gombe, Biliri and Kaltungo. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Gombe was at its lowest in 1976-1990. The level of street-network sprawl in new development in Biliri followed a zig-zag trend. The level of street-network sprawl in new development in Kaltungo followed a zig-zag trend.
How do development practices in Gombe fare in comparison to others in Nigeria? Most recently in 2001-2014, street construction in Gombe was the 31st-most disconnected out of the 37 regions in Nigeria. Its position in the ranks since 1975 has fallen; relative to other regions in Nigeria, street construction in Gombe has become more connected. Gombe ranked 24th in 1975, 33rd in 1976-1990, 31st in 1991-2000 and 31st in 2001-2014.
As of 2014, the city with the most disconnected street network in Gombe is Guyuk with an SNDi of 4.65, which is highly disconnected. Conversely, the most connected city is Bojude with an SNDi of -0.8, which is very well-connected. See trends for these cities: Bojude, Guyuk
The level of street-network sprawl in the aggregate network in Gombe was at its lowest in 1976-1990. To get a sense of how the aggregate street network has changed in Gombe, we can consider three of its most populous cities: Gombe, Biliri and Kaltungo. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Gombe was at its lowest in 1991-2000. The level of street-network sprawl in the aggregate network in Biliri followed a zig-zag trend. The level of street-network sprawl in the aggregate network in Kaltungo followed a zig-zag trend.
To date, Gombe is the 30th-most disconnected out of the 37 regions in Nigeria. Its position in the ranks since 1975 has fallen; relative to other regions in Nigeria, the street network in Gombe has become more connected. Gombe ranked 24th in 1975, 30th in 1976-1990, 30th in 1991-2000 and 30th in 2001-2014.