Deroua in context: Street-network sprawl trends

Deroua in context

1.622.42.8<19751976–19901991–20052006–2020SNDi of street additions
1.622.42.8<19751976–19901991–20052006–2020SNDi of entire street network
DerouaChaouia - Ouardigha (Region)Morocco (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Deroua plotted against Chaouia - Ouardigha and Morocco. The SNDi of new construction in Deroua was at its lowest in 1991-2005, compared to Chaouia - Ouardigha which followed a zig-zag trend with an overall increase and Morocco which followed a zig-zag trend with an overall increase. Most recently, Deroua's incremental SNDi rose from 1.52 to 1.71 between 1991-2005 and 2006-2020. In terms of the aggregate network, Deroua ranked 3rd out of 7 cities in Chaouia - Ouardigha and 22nd out of 72 in Morocco as of 2020.

New Street Additions (2006–2020)

SNDi value
1.71
Rank in Morocco
20th of 72
Rank in Chaouia - Ouardigha
3rd of 7

Entire Network (Aggregate)

SNDi value
1.66
Rank in Morocco
22nd of 72
Rank in Chaouia - Ouardigha
3rd of 7

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

11.522.5<19751976–19901991–20052006–2020SNDi of street additions
11.522.5<19751976–19901991–20052006–2020SNDi of entire street network
DerouaAlasehirXihua

In new street additions, Alaşehir and Xihua both fluctuated in street-construction patterns, while Deroua built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. Looking at the full network, Alaşehir and Xihua both became progressively more disconnected, while Deroua became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Notably, Deroua had a more sprawly network than Xihua in 1975, but the two have since reversed their relative ranking.