Samar: region in Philippines
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 Samar, Philippines on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Samar as of 2014, the overall level of street-network sprawl is 7.08, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 6.9, 6.68, 8.78 and 8.57. Disconnectivity in street construction in Samar follows a zig-zag trend. In 1976-1990, street construction was most disconnected, while construction was most connected in 1991-2000.
Quantity of street network construction: The street network in Samar spans a total of 2714 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 6.68, which is highly disconnected.
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 6.9, 6.69, 7.0 and 7.08. The SNDi of the aggregate street network in fell at first, but Samar has worsened in disconnectivity since 1990.
The level of street-network sprawl in new development in Samar followed a zig-zag trend with an overall increase. To get a sense of how street development has changed in Samar, we can consider two of its most populous cities: Calbayog and Catbalogan. Out of the two cities, Catbalogan does not follow the same trend as the region. The level of street-network sprawl in new development in Catbalogan followed a zig-zag trend.
How do development practices in Samar fare in comparison to others in Philippines? Most recently in 2001-2014, street construction in Samar was the 2nd-most disconnected out of the 51 regions in Philippines. Its position in the ranks since 1975 has not changed. Samar ranked 2nd in 1975, 2nd in 1976-1990, 3rd in 1991-2000 and 2nd in 2001-2014.
As of 2014, the city with the most disconnected street network in Samar is Calbayog with an SNDi of 3.56, which is highly disconnected. Conversely, the most connected city is Catbalogan with an SNDi of 3.4, which is highly disconnected. See trends for these cities: Catbalogan, Calbayog
The level of street-network sprawl in the aggregate network in Samar was at its lowest in 1976-1990. To get a sense of how the aggregate street network has changed in Samar, we can consider two of its most populous cities: Calbayog and Catbalogan. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Calbayog followed a zig-zag trend with an overall decrease. The level of street-network sprawl in the aggregate network in Catbalogan was at its lowest in 1976-1990.
To date, Samar is the 3rd-most disconnected out of the 51 regions in Philippines. Its position in the ranks since 1975 has fallen; relative to other regions in Philippines, the street network in Samar has become more connected. Samar ranked 2nd in 1975, 3rd in 1976-1990, 3rd in 1991-2000 and 3rd in 2001-2014.