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THE CENSUS CARTOGRAPHY

Organization And Progress

THE 2008 LIBERIAPOPULATION AND HOUSING CENSUS

UNSD WorkshopLUSAKA - ZAMBIA

Presented by:

Isaac MwangangiThomas Davis

Augustine FayiahJuanitta Dunna

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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

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1. INTRODUCTION -MAP OF LIBERIA

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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

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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

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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

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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

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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

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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

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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

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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

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5. PREPARATORY WORK cont.

Satellite Imagery

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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

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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).

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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

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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.

6. CARTOGRAPHIC FIELD WORK cont

75% of field work completed

FIELD MAPPING PROGRESS

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7. CENSUS GEOGRAPHIC CODES

county District Cl/zone EA Lo/to/com Type

Digit 1 2 3 4 5 6 7 8 9 10 11

County

District

Clan/Zone

EA

Lo/Town/Com

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7. CENSUS GEOGRAPHIC CODES cont.

03 Bomi

06 Bong

09 Grand Bassa

12 Grand Cape Mount

15 Grand Gedeh

18 Grand Kru

21 Lofa

24 Margibi

27 Maryland

30 Montserrado

33 Nimba

36 River Cess

39 Sinoe

42 River Gee

45 Gbarpolu

0602 Fuamah

0604 Jorquelleh

0606 Kokoyah

0608 Panta-Kpa

0610 Salala

0612 Sanayea

0614 Suakoko

0616 Zota

County Geographic Codes

The census Geographic Codes of the districts in Bong County

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7. CENSUS GEOGRAPHIC CODES cont.EA Number

EA GEOGRAPHIC CODE

Loc/ComCode

Type

EA01 0 6 1 6 0 1 0 1 0 1 2

EA02 0 6 1 6 0 1 0 2 0 2 2

EA03 0 6 1 6 0 1 0 3 0 2 2

EA04

0 6 1 6 0 1 0 4 0 3 2

0 6 1 6 0 1 0 4 0 4 2

0 6 1 6 0 1 0 4 0 5 2

EA1 comprises of 1 locality/communityEAs 2 and 3 comprises of 1 locality/community

EA 4 comprises of 3 localities/communities

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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

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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

PREPARATION OF EA MAPS

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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.

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PREPARATION OF CENSUS EA MAPS cont

GEOGRAPHICDATA

ATTRIBUTEDATA

Digital Topo/Satellite data

Field Returns EA/Adm Other features

GPSData

Control Forms

Scan, Georef, Digitize, Edit, Add descriptive info,

Projection ChangeTransformation

DevelopData Capture Screens

Data CaptureEditing, Correction

1. TYPES OF DATA

2. SOURCES OF DATA

3. DATA CONVERSION

4. INTEGRATION OF CENSUS MAPPING DATA SETS

vector data from

GPS sketch maps

Planning MapsUrban Areas

Planning MapsRural Areas

Overlay admini/EA boundaries

and other featuresOn satellite data

Overlay admini/EA boundaries

and other featuresOn topographic data

5. REPARATION OF FINAL EA and SA MAPS

INTEGRATION OF DATA SETS

PREPARATIONOF CENSUS MAPS

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GRAND GEDEH Reviewing the census cartographic work

FIELD MONITORING

26GRAND GEDEHExamining the census maps and control forms

FIELD MONITORING cont.

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RIVER GEE

Verifying Kankwaekan City limit on the census map.

FIELD MONITORING cont.

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RIVER GEE Census Map showing county, district, clan and EA

boundaries.

FIELD MONITORING cont.

29MARYLAND

Checking the accuracy of features on the base maps

FIELD MONITORING cont.

30MARYLAND - Sketch Map of Pleebo City showing the delineated EAs and structure numbers for key

features.

FIELD MONITORING cont.

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

FIELD MONITORING cont.

32GRAND BASSA - Buchanan City map reviewed

FIELD MONITORING CONT.

33GRAND BASSA - Demonstrating structure numbering and

household listing

FIELD MONITORING CONT.

34GRAND BASSA - Buchanan City plotting the missing road

FIELD MONITORING CONT.

SINOEReviewing the delineated EAs

FIELD MONITORING CONT.

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THE STATE OF THE ROADS IN THE FIELD CONT.

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CHALLEGING TERRAIN AND DIFFICULT ROADS CONT.

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CHALLEGING TERRAIN AND DIFFICULT ROADS CONT.

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CHALLEGING TERRAIN AND DIFFICULT ROADS CONT.

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CHALLEGING TERRAIN AND DIFFICULT ROADS CONT.

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CHALLEGING TERRAIN AND DIFFICULT ROADS CONT.

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CHALLEGING TERRAIN AND DIFFICULT ROADS CONT.

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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

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END OF PRESENTATION

QUESTIONS????