Umuellem: city in Abia, 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 Umuellem, Nigeria on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Umuellem as of 2014, the overall level of street-network sprawl is 2.98, which is in the 40th to 60th percentile of disconnectedness.
Trends in street network construction: The SNDis of street construction for the respective time periods are 2.03, 2.9, 2.98 and 3.04. In each period, new street development in Umuellem steadily grows more disconnected than in the last. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 0.87 points, but between 1991-2000 and 2001-2014, it rose by just 0.06.
Quantity of street network construction: The street network in Umuellem spans a total of 122 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 3.04, 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 2.03, 2.8, 2.87 and 2.98. Overall, the SNDi of the aggregate street network has risen: the street network in Umuellem has become more disconnected. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 0.77 points, but between 1991-2000 and 2001-2014, it rose by just 0.11.
Umuellem and Abia follow the same trend in the disconnectivity of their street network constructions. The SNDi for both of these rose steadily.
How do development practices in Umuellem fare in comparison to others in Abia? Most recently in 2001-2014, street construction in Umuellem was the 10th-most disconnected out of the 13 cities in Abia. Its position in the ranks since 1975 has fallen; relative to other cities in Abia, street construction in Umuellem has become more connected. Umuellem ranked 3rd in 1975, 9th in 1976-1990, 5th in 1991-2000 and 10th in 2001-2014.
Umuellem and Nigeria do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Umuellem rose steadily, while the SNDi of street constructions in Nigeria peaked in 1991-2000.
How do development practices in Umuellem fare in comparison to others in Nigeria? Most recently in 2001-2014, street construction in Umuellem was the 171st-most disconnected out of the 411 cities in Nigeria. Its position in the ranks since 1975 has fallen; relative to other cities in Nigeria, street construction in Umuellem has become more connected. Umuellem ranked 88th in 1975, 113th in 1976-1990, 129th in 1991-2000 and 171st in 2001-2014.
Umuellem and Abia follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these rose steadily.
To date, Umuellem is the 9th-most disconnected out of the 13 cities in Abia. Its position in the ranks since 1975 has fallen; relative to other cities in Abia, the street network in Umuellem has become more connected. Umuellem ranked 3rd in 1975, 9th in 1976-1990, 9th in 1991-2000 and 9th in 2001-2014.
Umuellem and Nigeria follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these rose steadily.
To date, Umuellem is the 129th-most disconnected out of the 411 cities in Nigeria. Its position in the ranks since 1975 has fallen; relative to other cities in Nigeria, the street network in Umuellem has become more connected. Umuellem ranked 88th in 1975, 95th in 1976-1990, 101st in 1991-2000 and 129th in 2001-2014.
As of 2015, Umuellem had a built-up area of 2.28 square kilometers, and a population of 95719 people.
These are some other cities with approximately the same population: