Street-network Sprawl in Guercif, Morocco

What is Street-network sprawl?

Street-network Sprawl is a way to measure urban sprawl, worldwide, through the connectedness of the streets. Less sprawl means more connected, more walkable streets. Well-connected streets – like New York City’s grid – are more walkable and can be served by public transit.

The street network is permanent, and its connectivity affects the livability and environmental footprint of cities for decades and centuries to come. In places with more connected streets, residents drive less and walk more. A well-connected street network is associated with better outcomes for health, the environment, sustainable consumption, social integration, and equity.

We can quantify how connected street networks are with the Street Network Disconnectedness Index (SNDi).

SNDi -- our measure of street-network sprawl (disconnectedness)

The SNDi is a comprehensive measurement of “sprawl”. It captures:

A higher SNDi means less-connected streets – i.e., more sprawl. For the 10137 cities in our dataset, the average SNDi is 2.25, with half of the cities' SNDis falling between 1.08 and 3.25.

More information on the sprawl index can be found in these research papers:

To see the state of street-network sprawl across the globe, visit the sprawlmap.

Guercif: city in Taza - Al Hoceima - Taounate, Morocco

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 Guercif, Morocco on the sprawlmap

Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Guercif as of 2014, the overall level of street-network sprawl is 2.32, 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 2.01, 2.65, 1.18 and 4.44. Disconnectivity in street construction in Guercif follows a zig-zag trend. In 1991-2000, street construction was most disconnected, while construction was most connected in 2001-2014.

Quantity of street network construction: The street network in Guercif spans a total of 123 kilometers. It is dominated by roads constructed prior to 1975. These roads have an SNDi of 2.01, 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 2.01, 2.36, 2.26 and 2.32. Disconnectivity in Guercif's street network follows a zig-zag trend. In 1975, the city was most disconnected; while it was most connected in 1976-1990.

Guercif and Taza - Al Hoceima - Taounate do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Guercif followed a zig-zag trend with an overall increase, while the SNDi of street constructions in Taza - Al Hoceima - Taounate fell steadily.

How do development practices in Guercif fare in comparison to others in Taza - Al Hoceima - Taounate? Most recently in 2001-2014, street construction in Guercif was the 1st-most disconnected out of the 3 cities in Taza - Al Hoceima - Taounate. Its position in the ranks since 1975 has risen; relative to other cities in Taza - Al Hoceima - Taounate, street construction in Guercif has become more disconnected. Guercif ranked 2nd in 1975, 3rd in 1976-1990, 3rd in 1991-2000 and 1st in 2001-2014.

Guercif and Morocco do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Guercif followed a zig-zag trend with an overall increase, while the SNDi of street constructions in Morocco rose steadily.

How do development practices in Guercif fare in comparison to others in Morocco? Most recently in 2001-2014, street construction in Guercif was the 3rd-most disconnected out of the 61 cities in Morocco. Its position in the ranks since 1975 has risen; relative to other cities in Morocco, street construction in Guercif has become more disconnected. Guercif ranked 11th in 1975, 8th in 1976-1990, 35th in 1991-2000 and 3rd in 2001-2014.

Guercif and Taza - Al Hoceima - Taounate do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Guercif followed a zig-zag trend with an overall increase, while the SNDi of street constructions in Taza - Al Hoceima - Taounate fell steadily.

To date, Guercif is the 3rd-most disconnected out of the 3 cities in Taza - Al Hoceima - Taounate. Its position in the ranks since 1975 has fallen; relative to other cities in Taza - Al Hoceima - Taounate, the street network in Guercif has become more connected. Guercif ranked 2nd in 1975, 1st in 1976-1990, 3rd in 1991-2000 and 3rd in 2001-2014.

Guercif and Morocco do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Guercif followed a zig-zag trend with an overall increase, while the SNDi of street constructions in Morocco rose steadily.

To date, Guercif is the 7th-most disconnected out of the 61 cities in Morocco. Its position in the ranks since 1975 has risen; relative to other cities in Morocco, the street network in Guercif has become more disconnected. Guercif ranked 11th in 1975, 5th in 1976-1990, 6th in 1991-2000 and 7th in 2001-2014.

As of 2015, Guercif had a built-up area of 3.81 square kilometers, and a population of 105538 people.

These are some other cities with approximately the same population: