Sonora: region in Mexico
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 Sonora, Mexico on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Sonora as of 2014, the overall level of street-network sprawl is 2.43, 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 1.07, 1.75, 2.43 and 4.02. In each period, new street development in Sonora steadily grows more disconnected than in the last.
Quantity of street network construction: The street network in Sonora spans a total of 13837 kilometers. The period with the greatest volume of street construction was 1976-1990. These roads have an SNDi of 1.75, 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 1.07, 1.58, 1.84 and 2.43. Overall, the SNDi of the aggregate street network has risen: the street network in Sonora has become more disconnected.
The level of street-network sprawl in new development in Sonora rose steadily. To get a sense of how street development has changed in Sonora, we can consider three of its most populous cities: Hermosillo, Ciudad Obregón and Heroica Nogales. Disconnectivity in the most populous cities in Sonora follow the same region trend.
How do development practices in Sonora fare in comparison to others in Mexico? Most recently in 2001-2014, street construction in Sonora was the 20th-most disconnected out of the 32 regions in Mexico. Its position in the ranks since 1975 has risen; relative to other regions in Mexico, street construction in Sonora has become more disconnected. Sonora ranked 27th in 1975, 28th in 1976-1990, 26th in 1991-2000 and 20th in 2001-2014.
As of 2014, the city with the most disconnected street network in Sonora is Heroica Nogales with an SNDi of 4.83, which is highly disconnected. Conversely, the most connected city is Puerto Peñasco with an SNDi of -0.01, which is very well-connected. See trends for these cities: Puerto Peñasco, Heroica Nogales
The level of street-network sprawl in the aggregate network in Sonora rose steadily. To get a sense of how the aggregate street network has changed in Sonora, we can consider three of its most populous cities: Hermosillo, Ciudad Obregón and Heroica Nogales. Disconnectivity in the most populous cities in Sonora follow the same region trend.
To date, Sonora is the 23rd-most disconnected out of the 32 regions in Mexico. Its position in the ranks since 1975 has risen; relative to other regions in Mexico, the street network in Sonora has become more disconnected. Sonora ranked 27th in 1975, 28th in 1976-1990, 28th in 1991-2000 and 23rd in 2001-2014.