project prepared a distributed population layer for 2030
for the Nile Basin countries. It is based on the medium
projection for 2030 of the United Nations Population Division
makers and planners need to know the growth, density, and
distribution of human population in order to plan infrastructure,
schools, and hospitals, but also to assess future need for
agricultural produce or electricity per sub administrative
2030 distributed dataset combines information from various
2004 serves as GIS base layer. This database presents census
counts distributed to cells based on probability coefficients
derived from road proximity, slope, land cover, and nighttime
lights. The grid system has a lat-long cell-size of 30 arc-seconds,
which equals approximately 1 km at the equator.
uses population totals obtained from the US Bureau of Census.
This database differs from the data set of the United Nations
Population Division, as each organization updates population
surveys using different adjustments for birth and death
rate, and international immigration.
totals for 2030, as well as rural and urban growth rates,
were obtained from the United Nations Population Division.
areas were obtained from AFRICOVER and the ESRI Gazetteer.
The project digitized urban polygons for DR Congo, Egypt,
following assumptions were made:
2005 and 2030 country totals were obtained from UNPD;
• differences between US Bureau of Census and UNPD
country totals were adjusted proportionally per grid cell;
• urban growth was spread proportionally over urban
• rural growth was spread proportionally over rural
• areas classified as urban in 2005 remain urban in
• areas classified as rural in 2005 remain rural in
2030, with the exception of rural areas in close proximity
to existing urban areas. See