Census Mapping A Case of Zambia

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Census MappingA Case of Zambia

• UN Workshop on Census Cartography and Management,
  Lusaka, 8-12th October 2007

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Presentation Outline

• History of Census Mapping in Zambia
• Census Mapping Methodologies
• Enumeration Area Demarcation Criteria
• Role of GIS in the CSO
• Challenges facing the Office with regards to
  mapping
• Strategies for the 2010 Census Mapping
• Urgent short term objectives of the 2010 CMP
• Long term objectives of 2010 CMP
• Imagery Coverage and costing
• Spatial Data Availability for mapping
• What we expect from the 2010 CMP

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History of Census Mapping

• 1977-1980 Census mapping for 1980 Census
• 1987-1990 Census mapping for 1990 Census of
  Population and Housing
• 1998-2000 Census mapping for the 2000 round of
  Census of Population and Housing

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Census Mapping Methodology

• 1980 and 1990 census mapping methods based on
  manual methods with prismatic compasses and
  drafting.
• 2000 Census GPS was used to update map features
  but still manual plotting and drafting of maps
  was still employed.
• 2010 Census mapping method largely GIS based with
  Imagery as the base map. GPS to be used to update
  the locality listing and community
  infrastructures.

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Enumeration Demarcation Criteria

• Household 60-100 hh or 300-500 people in rural
  EAs and
• 100-150 hh or 600-900 people in urban EAs
• Estimates based on the average rural hh size of 5
  in rural areas and 6 in urban areas
• Demarcation hierarchy/coding pattern tied to
  Province, District, Constituency and Wards
• For 2010 Census Mapping a Locality name boundary
  file to be created for dissemination of small
  areas statistics.

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Role of GIS in CSO

• GIS has not been used in pre census cartographic
  activities
• Technology widely used in the 2000 census
  analysis to produce Census atlas and Thematic
  Maps
• All 2000 EAs were digitized and various
  administrative geography created- province,
  district, constituency and ward.
• GIS used to disseminate demographic data at these
  levels

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Challenges facing the Office with regards to GIS
use

• Inadequate integrated and properly designed data
  warehouse and database
• Inadequate awareness within the organization on
  use of GIS in statistical agencies
• Lack of adequate institutional support regarding
  maintenance and sustainability of GIS
• Inadequate accurate geographic base data and
  Inadequate equipment
• Skills development and training is needed to
  realize the potential of GIS
• Inadequate funding and operational assistance to
  make the difference

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Strategy for 2010 Mapping Program

• Greater GIS data analysis and dissemination
  possibilities
• Creation of an accurate administrative and
  statistical boundary spatial database
• Accurate, cost effective Census Mapping
  operations and with the end result being accurate
  EA demarcation and map creation.
• Increasing the scope of statistics products
• Further developing GIT capacity within the CSO
• Fast-tracking relevant staff skills development
• Acting as a corporate service provider to the CSO
• Increasing the accuracy and effectiveness of
  census and survey data collection
• Time and Cost Saving due to decreased fieldwork
  activities as a result of better survey and
  census implementation methods.

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Urgent short term implementation processes for
the CMP

• Establish an accurate cartographic base for
  creation of accurate census and survey
  cartography
• Essential to obtain high resolution satellite
  imagery to act as an accurate and current
  geographic base from which census mapping
  operations can be initiated. 2.5 meter and 1
  meter resolution for rural and urban
  respectively
• Procure computer equipment to equip Head office
  and Provincial Offices with GIS labs -14 PCs and
  10 Large Format Plotters procured by UNFPA
• Procure additional equipment such as the A3
  printers and specifically the GIS Software for
  demarcation and image server.
• Train staff as well as the field staff in modern
  demarcation methods concurrently with the
  database design and installation of the GIS.

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Long term objectives of 2010 CMP

• Providing census support during the enumeration
  and processing phase
• Playing an essential part in analysis and
  dissemination of the Census 2010 information
• Designing and implementing a poverty mapping
  program
• To create a definitive Locality Name boundary set
  derived from the EA boundaries
• Continuing to produce accurate EA maps for survey
  taking
• Progress tracking and logistics tracking center
  during the 2010 census
• Investigating new ways of analyzing economic and
  socio-demographic statistics in the spatial
  context
• Leading the statistics advocacy campaign to the
  users through innovative analysis and
  dissemination techniques
• The creation of an extensive Census Atlas for the
  2010 Population Census

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Satellite Imagery Coverage of Zambia

• 301 Spot scenes cover Zambia

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Estimated Costs of Imagery by Province
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Spatial Data Available for Mapping

• IKONOS 1m pan sharpened satellite imagery for a
  part of Lusaka and the whole of Kafue towns.
• The provincial, district, constituency, ward and
  national parks boundaries are available in
  digital format.
• The 2000 Census EA boundaries are available in
  digital format. Census data is only linked to
  ward, constituency and district level.
• No digital topographic map sheets only hard
  copy maps exist.
• Digital point data regarding school and health
  facility locations are also available, as well as
  transport and topographic data.

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What we expect from the 2010 CMP

• An integrated GIS that will answer current CSO
  Challenges
• Accurate geographic base to plan and implement
  census and survey operations-increase accuracy
  of data collection, increasing demand and profile
  of statistics in the user community.
• Added analysis and dissemination possibilities
  (thematic maps, etc) will enhance decision-making
  advocate the use of statistics and further
  increase the profile of statistics.
• Institutional capacity will be increased due to
  the added dimension GIS brings to all the core
  processes within the CSO. The Unit will act as
  Corporate service provider for the whole
  organization.
• Master sampling frames and updated survey
  methodology increasing the accuracy of surveys
  and census data
• Socio-demographic data collected more cost and
  time effectively with fewer resources.

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Sample Map of Digital EA Map for Zambia
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End of Presentation

• Thank you for your attention!
• isikanyiti_at_zamstats.gov.zm