Nimba: region in Liberia
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 Nimba, Liberia on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Nimba as of 2014, the overall level of street-network sprawl is 5.78, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 3.91, 6.36, 8.55 and 7.41. Street construction in Nimba 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 Nimba spans a total of 3231 kilometers. It is dominated by roads constructed prior to 1975. These roads have an SNDi of 3.91, 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 3.91, 4.38, 5.3 and 5.78. Overall, the SNDi of the aggregate street network has risen: the street network in Nimba has become more disconnected.
The level of street-network sprawl in new development in Nimba peaked in 1991-2000. To get a sense of how street development has changed in Nimba, we can consider one of its most populous cities: Ganta. Disconnectivity in the most populous cities in Nimba follow the same region trend.
How do development practices in Nimba fare in comparison to others in Liberia? Most recently in 2001-2014, street construction in Nimba was the 3rd-most disconnected out of the 5 regions in Liberia. Its position in the ranks since 1975 has risen; relative to other regions in Liberia, street construction in Nimba has become more disconnected. Nimba ranked 5th in 1975, 5th in 1976-1990, 2nd in 1991-2000 and 3rd in 2001-2014.
As of 2014, the city with the most disconnected street network in Nimba is Ganta with an SNDi of 3.36, which is highly disconnected. Conversely, the most connected city is Ganta with an SNDi of 3.36, which is highly disconnected. See trends for these cities: Ganta, Ganta
The level of street-network sprawl in the aggregate network in Nimba rose steadily. To get a sense of how the aggregate street network has changed in Nimba, we can consider one of its most populous cities: Ganta. Disconnectivity in the most populous cities in Nimba follow the same region trend.
To date, Nimba is the 5th-most disconnected out of the 5 regions in Liberia. Its position in the ranks since 1975 has not changed. Nimba ranked 5th in 1975, 5th in 1976-1990, 5th in 1991-2000 and 5th in 2001-2014.