Ogooué-Maritime: region in Gabon
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 Ogooué-Maritime, Gabon on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Ogooué-Maritime as of 2014, the overall level of street-network sprawl is 5.28, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 3.65, 3.57, 7.47 and 11.18. The disconnectivity of new streets constructed in Ogooué-Maritime fell, then rose. In 1976-1990, new street layouts were the most connected.
Quantity of street network construction: The street network in Ogooué-Maritime spans a total of 781 kilometers. It is dominated by roads constructed in 1991-2000. These roads have an SNDi of 7.47, 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 3.65, 3.57, 5.15 and 5.28. The SNDi of the aggregate street network in fell at first, but Ogooué-Maritime has worsened in disconnectivity since 1990.
The level of street-network sprawl in new development in Ogooué-Maritime was at its lowest in 1976-1990. To get a sense of how street development has changed in Ogooué-Maritime, we can consider one of its most populous cities: Port-Gentil. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Port-Gentil followed a zig-zag trend.
How do development practices in Ogooué-Maritime fare in comparison to others in Gabon? Most recently in 2001-2014, street construction in Ogooué-Maritime was the 1st-most disconnected out of the 4 regions in Gabon. Its position in the ranks since 1975 has risen; relative to other regions in Gabon, street construction in Ogooué-Maritime has become more disconnected. Ogooué-Maritime ranked 4th in 1975, 4th in 1976-1990, 3rd in 1991-2000 and 1st in 2001-2014.
As of 2014, the city with the most disconnected street network in Ogooué-Maritime is Port-Gentil with an SNDi of 2.65, which is in the 40th to 60th percentile of disconnectedness. Conversely, the most connected city is Port-Gentil with an SNDi of 2.65, which is in the 40th to 60th percentile of disconnectedness. See trends for these cities: Port-Gentil, Port-Gentil
The level of street-network sprawl in the aggregate network in Ogooué-Maritime was at its lowest in 1976-1990. To get a sense of how the aggregate street network has changed in Ogooué-Maritime, we can consider one of its most populous cities: Port-Gentil. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Port-Gentil rose steadily.
To date, Ogooué-Maritime is the 4th-most disconnected out of the 4 regions in Gabon. Its position in the ranks since 1975 has not changed. Ogooué-Maritime ranked 4th in 1975, 4th in 1976-1990, 4th in 1991-2000 and 4th in 2001-2014.