1. The use of GIS in the Central Bureau of Statistics (CBS), Namibia By Mrs Ottilie M Mwazi Chief Statistician, Survey, Cartography/GIS TeL:

2. Administrative set up
Namibia has a land area of about square kilometers
The country is divided into 13 regions
Regions are divided into constituencies (107 in total for all regions)
The biggest region has 12 constituencies
Constituencies are demarcated based on population size
EAs are demarcated within constituencies

3. Implementation of GIS at CBS
GIS was implemented for 2001 census mapping to produce digital maps for 2001 census enumeration
Data warehouses using existing spatial data from various sources were created
Spatial data needed for census undertaking was extracted and GIS database was created
The GIS has made it possible to retrieve, update, link (census/survey data to the geography), query the database, print maps on based on any theme, etc.
GIS Tool was created up to constituency level

4. 2001 Census Mapping
The country was demarcated into unique geographical areas known as enumeration areas
GPS (handheld and differential) were used during fieldwork
GIS was used to delineate EAs boundary

5. GIS and 2011 census mapping Step 1 Step 2 Step 3 Step 4 Step 5 Step 6
Aerial photographs/ satellite images acquired
Structures captured from images in GIS in the office
Un-verified dwelling unit frame created and EAs demarcated
Field maps with dwelling unit numbers produced
Field workers sent in the field to capture the location of, & other information relating to, all the dwelling units in country using PDAs
Captured information will be verified and stored in a GIS database, and a verified Dwelling Unit Frame will be created
Demarcation of EAs will be done in the office.
Final EA maps for Population & Housing Census enumeration will be produced
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
Step 8
PROCESS: A summarized process of 2011 Census mapping methodology

6. Why dwelling frame Know where people live:
It will be useful for Flood Early Warning System
Will be easy to plan for safe water provision
Easy to identify communities that walk longer distance to public services (Clinics, School, etc)
Easier to update dwelling units than households
Improve data dissemination at lower geographical areas
Serve our clients better who are planning using other boundaries e.g. Health, Police, Headmen/Chiefs traditional authorities, etc.
Will be easier to estimate population if updated regularly

7. GIS and emergency responses
With GIS, and dwelling frame in place we will be in position to spatially visualize dwellings affected by flood:
This will ensure for effective and efficient emergency response
It will also be possible to quantify the number of people, households and homestead affected by flood.

8. GIS and basic services delivery
With GIS, and dwelling frame in place we are now in position to spatially visualize gaps in access to basic services (health facilities, schools, clean water) :
Therefore, GIS will play a major role in the process of planning and locating of new basic facilities

9. GIS and spatial analysis
With GIS, we could geo-statistically analyze the pattern of Human Development Index (HDI) and map out the outliers and clusters
Human Development Index
We could also map out the hot and cold spots of HDI

10. Thank you for your attention!!
End of presentation
Thank you for your attention!!