Sa'dah: city in Sa`dah, Yemen
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 Sa'dah, Yemen on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Sa'dah as of 2014, the overall level of street-network sprawl is 1.73, which is relatively well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are nan, nan, 3.08 and 0.7. Data was not available in 1975 and 1976-1990.
Quantity of street network construction: The street network in Sa'dah spans a total of 23 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 0.7, 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 nan, nan, 2.92 and 1.73. Data was not available in 1975 and 1976-1990.
Sa'dah and Sa`dah do not follow the same trend in the disconnectivity of their street network constructions. There was not enough data from the city, as well as the Sa`dah's street network construction.
How do development practices in Sa'dah fare in comparison to others in Sa`dah? Most recently in 2001-2014, street construction in Sa'dah was the 1st-most disconnected out of the 1 cities in Sa`dah. Its position in the ranks since 1975 has not changed. Sa'dah ranked 1st in 1991-2000 and 1st in 2001-2014. There was no ranking in 1975 and 1976-1990 due to unavailable data.
Sa'dah and Yemen do not follow the same trend in the disconnectivity of their street network constructions. There was not enough data from the city, while the SNDi of street constructions in Yemen followed a zig-zag trend with an overall decrease.
How do development practices in Sa'dah fare in comparison to others in Yemen? Most recently in 2001-2014, street construction in Sa'dah was the 31st-most disconnected out of the 36 cities in Yemen. Its position in the ranks since 1975 has fallen; relative to other cities in Yemen, street construction in Sa'dah has become more connected. Sa'dah ranked 8th in 1991-2000 and 31st in 2001-2014. There was no ranking in 1975 and 1976-1990 due to unavailable data.
Sa'dah and Sa`dah do not follow the same trend in the disconnectivity of their aggregate street networks. There was not enough data from the city, while the SNDi of street constructions in Sa`dah fell steadily.
To date, Sa'dah is the 1st-most disconnected out of the 1 cities in Sa`dah. Its position in the ranks since 1975 has not changed. Sa'dah ranked 1st in 1991-2000 and 1st in 2001-2014. There was no ranking in 1975 and 1976-1990 due to unavailable data.
Sa'dah and Yemen do not follow the same trend in the disconnectivity of their aggregate street networks. There was not enough data from the city, while the SNDi of street constructions in Yemen was at its lowest in 1976-1990.
To date, Sa'dah is the 26th-most disconnected out of the 36 cities in Yemen. Its position in the ranks since 1975 has fallen; relative to other cities in Yemen, the street network in Sa'dah has become more connected. Sa'dah ranked 8th in 1991-2000 and 26th in 2001-2014. There was no ranking in 1975 and 1976-1990 due to unavailable data.
As of 2015, Sa'dah had a built-up area of 0.39 square kilometers, and a population of 143405 people.
These are some other cities with approximately the same population: