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THE CENSUS CARTOGRAPHY Organization And Progress

UNSD Workshop LUSAKA - ZAMBIA. THE 2008 LIBERIA POPULATION AND HOUSING CENSUS. THE CENSUS CARTOGRAPHY Organization And Progress. Presented by: Isaac Mwangangi Thomas Davis Augustine Fayiah Juanitta Dunna. OUTLINE. INTRODUCTION INTRODUCTION -MAP OF LIBERIA

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THE CENSUS CARTOGRAPHY Organization And Progress

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  1. UNSD Workshop LUSAKA - ZAMBIA THE 2008 LIBERIA POPULATION AND HOUSING CENSUS THE CENSUS CARTOGRAPHY Organization And Progress Presented by: Isaac Mwangangi Thomas Davis Augustine Fayiah Juanitta Dunna

  2. OUTLINE • INTRODUCTION • INTRODUCTION -MAP OF LIBERIA • OBJECTIVES OF CENSUS MAPPING • EXPECTED OUTPUTS • PREPARATORY WORK • CARTOGRAPHIC FIELD WORK • CENSUS GEOGRAPHIC CODES • QUALITY CONTROL • PREPARATION OF EA MAPS • FIELD MONITORING • CHALLEGING TERRAIN AND DIFFICULT ROADS • LESSONS LEARNED

  3. 1. INTRODUCTION -MAP OF LIBERIA

  4. 1. INTRODUCTION • Censuses in 1962, 1974, and 1984 • Results were 1.1, 1.5 and 2.1 millions, respectively. • Estimated population is 3.6 million • No census for last 24 years due to 14 years of civil crisis • Next census planned in March 2008 • Census preparatory activities started/on-going • Census field mapping work started in March this year

  5. 2. OBJECTIVES OF CENSUS MAPPING • To provide maps for census enumeration • To construct an updated master sampling frame • To develop a geo-referenced spatial database on statutory boundaries, EAs, localities and social amenities • Provide a basis for GIS analysis and dissemination of the census results • Develop capacity in Census mapping/GIS

  6. 3. EXPECTED OUTPUTS • Maps for census enumeration • An updated master sampling frame • A geo-referenced spatial database on statutory boundaries, EAs, localities and social amenities • GIS Analytical reports on various thematic topics • An enhanced capacity in census mapping/GIS

  7. 5. PREPARATORY WORK • Inventory of existing resources. • Base Maps • Space • cartographic vehicles • equipment and materials. • The census project document(s) • Formulation of a census mapping plan • Assessment of the additional resources needed • Budget • Timeline

  8. 5. PREPARATORY WORK CONT. • Procurement of equipment • 1 Large Format Plotters • 2 Large Format Printer/Copier • 1 Digitizing tablet etc • Computers • Expendable materials • Software • ESRI Products • Erdas

  9. 5. PREPARATORY WORK CONT. • Recruitment of the International Expert • Identification of partners • Base maps • Updated 1:50,000 from UNMIL • Satellite Imageries covering 13 main cities-UNMIL • Original copies of 1:250,000- – Lands and Mines • Original copies of 1:50,000 – Lands and Mines

  10. 5. PREPARATORY WORK cont. • Obtaining lists of administrative units • Prepare letters of introduction • Prepare Mapping Reference Manual • Recruit and train 81 mapping staff • Training in field mapping • ARCGIS training by ESRI for 3 • Study Tour on census mapping in Kenya funded by UNFPA for 3

  11. 5. PREPARATORY WORK cont. • Preparation of Base Maps for field work • Scanning • Georeferencing (WGS84 Zone 29) • Reproduction using large format plotter/prnting Machine • Rural Areas 1:50,000/1:25,000 for rural areas • Urban Areas (Satellite Maps 1:1,500/1:2,500/1:5,000 areas) • Preparation of Planning maps • County/District 1:100,000/250,000 • Urban Area/Zone 1:5,000/1:10,000

  12. 5. PREPARATORY WORK cont. Satellite Imagery

  13. 6. CARTOGRAPHIC FIELD WORK • Contacting the local administration • Listing administrative units and localities • Map updating (administrative boundaries and other features) • Labeling/naming features correctly • Recording the location of key feature using GPS coordinates • Preparation of GPS Sketch Maps • Use of local guides

  14. 6. CARTOGRAPHIC FIELD WORK cont. • Delineation of EAs in Rural Areas • EAs must be within a clan • Quick count of household in the locality • Demarcation of Enumeration Areas each containing 80-120 households • An enumeration area may comprise of: • Several localities put together • A whole locality • Part of a locality (one locality divided into several enumeration areas).

  15. 6. CARTOGRAPHIC FIELD WORK cont • Delineation of EAs in Urban Areas • EA must be within a Zone • Structure Numbering and Household Listing • Demarcation of Enumeration Areas each containing 80-120 households • EA boundaries following physical features • Showing as many features as possible • Plotting names of household heads on either side of the EA boundary

  16. 6. CARTOGRAPHIC FIELD WORK cont. • Numbering of Enumeration Areas on the EA maps and control forms • EA01, EA02, EA03, EA04, EA05, EA06, EA07, EA08, EA09, EA10, EA11, EA12, EA13. • Creation and Numbering of Supervision Areas on the maps • SA 1 = EA01, EA02, EA03, EA04 • SA 2 = EA05, EA06, EA07, EA08, EA09 • SA 3 = EA10, EA11, EA12, EA13.

  17. 6. CARTOGRAPHIC FIELD WORK cont FIELD MAPPING PROGRESS 75% of field work completed

  18. 7. CENSUS GEOGRAPHIC CODES

  19. 7. CENSUS GEOGRAPHIC CODES cont. County Geographic Codes The census Geographic Codes of the districts in Bong County

  20. 7. CENSUS GEOGRAPHIC CODES cont. EA1 comprises of 1 locality/community EAs 2 and 3 comprises of 1 locality/community EA 4 comprises of 3 localities/communities

  21. QUALITY CONTROL • Review Meetings • Field Reference Manual • Training of staff • Field supervision – Field Mapping Coordinators • Field Monitoring – Senior staff • Indexing, filing and monitoring systems • Tracking system being developed

  22. PREPARATION OF EA MAPS • Prepare EA maps on clean copies • Scan and geo-reference • Digitize EA boundaries on-screen • Edit and enter descriptive data • Entry of GPS data • Integrating data sets to ensure they fit well

  23. PREPARATION OF EA MAPS cont • Design and produce • Enumeration Area Maps. • Supervision Area Maps • County, district and Urban Area Planning maps • Package and distribute EA/SA Maps • Train field staff • Provide technical support during enumeration.

  24. PREPARATION OF CENSUS EA MAPS cont GEOGRAPHIC DATA ATTRIBUTE DATA 1. TYPES OF DATA 2. SOURCES OF DATA Digital Topo/ Satellite data Field Returns EA/ Adm Other features Control Forms GPS Data Scan, Georef, Digitize, Edit, Add descriptive info, Develop Data Capture Screens • DATA • CONVERSION Projection Change Transformation Data Capture Editing, Correction 4. INTEGRATION OF CENSUS MAPPING DATA SETS INTEGRATION OF DATA SETS Planning Maps Urban Areas Planning Maps Rural Areas PREPARATION OF CENSUS MAPS 5. REPARATION OF FINAL EA and SA MAPS Overlay admini/EA boundaries and other features On topographic data Overlay admini/EA boundaries and other features On satellite data vector data from GPS sketch maps

  25. FIELD MONITORING GRAND GEDEH Reviewing the census cartographic work

  26. FIELD MONITORING cont. GRAND GEDEH Examining the census maps and control forms

  27. FIELD MONITORING cont. RIVER GEE Verifying Kankwaekan City limit on the census map.

  28. FIELD MONITORING cont. RIVER GEE Census Map showing county, district, clan and EA boundaries.

  29. FIELD MONITORING cont. MARYLAND Checking the accuracyof features on the base maps

  30. FIELD MONITORING cont. MARYLAND - Sketch Map of Pleebo City showing the delineated EAs and structure numbers for key features.

  31. FIELD MONITORING cont. MARYLAND - Form 5 showing the listed UTM coordinates of various features.

  32. FIELD MONITORING CONT. GRAND BASSA - Buchanan City map reviewed

  33. FIELD MONITORING CONT. GRAND BASSA - Demonstrating structure numbering and household listing

  34. FIELD MONITORING CONT. GRAND BASSA - Buchanan City plotting the missing road

  35. FIELD MONITORING CONT. SINOE Reviewing the delineated EAs

  36. THE STATE OF THE ROADS IN THE FIELD CONT.

  37. CHALLEGING TERRAIN AND DIFFICULT ROADSCONT.

  38. CHALLEGING TERRAIN AND DIFFICULT ROADSCONT.

  39. CHALLEGING TERRAIN AND DIFFICULT ROADSCONT.

  40. CHALLEGING TERRAIN AND DIFFICULT ROADSCONT.

  41. CHALLEGING TERRAIN AND DIFFICULT ROADSCONT.

  42. CHALLEGING TERRAIN AND DIFFICULT ROADSCONT.

  43. LESSONS LEARNED • About 90% of the EAs maps were accurate during the pilot • Some field staff had problems using the maps • A few EAs were either too large/small. • Rainy season/difficult terrain slowed field work • Use of defective base maps from UNMIL • 1 meter resolution not enough in some areas • Lack of vehicles for field coordination • Field mappers were not provided with salaries and other logistics on time • Provision of base maps not smooth due printing/logistics probles • Field monitoring improved quality of the work

  44. END OF PRESENTATION QUESTIONS????

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