Cuanza Sul: region in Angola
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 Cuanza Sul, Angola on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Cuanza Sul as of 2014, the overall level of street-network sprawl is 3.29, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 2.71, 3.42, 3.61 and 3.17. Street construction in Cuanza Sul 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 Cuanza Sul spans a total of 5512 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 3.17, which is in the 40th to 60th percentile of disconnectedness.
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 2.71, 3.28, 3.47 and 3.29. The aggregate street network in Cuanza Sul increased in disconnectivity initially,but the trend has turned around after 2000.
The level of street-network sprawl in new development in Cuanza Sul peaked in 1991-2000. To get a sense of how street development has changed in Cuanza Sul, we can consider three of its most populous cities: Sumbe, Gabela and Waku Kungo. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Sumbe followed a zig-zag trend. The level of street-network sprawl in new development in Gabela was at its lowest in 1991-2000. The level of street-network sprawl in new development in Waku Kungo peaked in 1976-1990.
How do development practices in Cuanza Sul fare in comparison to others in Angola? Most recently in 2001-2014, street construction in Cuanza Sul was the 14th-most disconnected out of the 18 regions in Angola. Its position in the ranks since 1975 has fallen; relative to other regions in Angola, street construction in Cuanza Sul has become more connected. Cuanza Sul ranked 10th in 1975, 11th in 1976-1990, 9th in 1991-2000 and 14th in 2001-2014.
As of 2014, the city with the most disconnected street network in Cuanza Sul is Gabela with an SNDi of 3.22, which is in the 40th to 60th percentile of disconnectedness. Conversely, the most connected city is Waku Kungo with an SNDi of 0.71, which is relatively well-connected. See trends for these cities: Waku Kungo, Gabela
The level of street-network sprawl in the aggregate network in Cuanza Sul peaked in 1991-2000. To get a sense of how the aggregate street network has changed in Cuanza Sul, we can consider three of its most populous cities: Sumbe, Gabela and Waku Kungo. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Sumbe followed a zig-zag trend. The level of street-network sprawl in the aggregate network in Gabela fell steadily. The level of street-network sprawl in the aggregate network in Waku Kungo rose steadily.
To date, Cuanza Sul is the 12th-most disconnected out of the 18 regions in Angola. Its position in the ranks since 1975 has fallen; relative to other regions in Angola, the street network in Cuanza Sul has become more connected. Cuanza Sul ranked 10th in 1975, 11th in 1976-1990, 9th in 1991-2000 and 12th in 2001-2014.