2022 SAG Award Winners

UNFPA and Yemisi Olugbile

Project Goal

The cartographic fieldwork is the fundamental core activity to the success of any population and housing census. The preparatory stage for the Liberia 2022 Population and Housing Census’ primary objective is to delineate enumeration areas (EA) in the country to facilitate the counting of inhabitants during enumeration period and fundamentally to ascertain that all areas are covered; that everyone in the country is counted with minimal possibility of under/double counting as well as the creation of a master sampling frame for socio-economic, agricultural and household surveys that are conducted during the inter- census period. Enumeration Area (EA) must be big enough for one enumerator to handle during the time of enumeration. The EAs will be delineated with very High Resolution Satellite Image (30-50cm) backdrop. ESRI’s Survey123 application was decided to be customized to capture structures and demarcate the EAS for the census.
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Business Problem Solved

LISGIS and UNFPA contacted ESRI/SAMBUS Ghana to develop the field cartographic questionnaire we designed to support the use of Survey123; make the application robust to handle surveys as well as cartographic data capture with the ability to visualize the data being captured on a web map. The heterogenous settlement pattern in Africa became a challenge for the application to handle, as such ESRI California was contacted to intervene. After series of technical meeting for 5 months, ESRI USA, finally came up with a customized application which was released to only Liberia.
Survey 123’s capability has been upgraded due to the demands from Liberia for the apps to capture both statistics and geography and display on the web map with image background. The apps has been successfully deployed for Census Cartographic complex mapping in Liberia-a milestone for ESRI and the GIS Team at LISGIS/UNFPA.

Technology Implemented

Survey123 Application was designed and customized to capture every structure existing on Liberia soil, determine what the structure is, its use (multi or single), status, type, category of the building(permanent, semi-permanent), number of households and total number of persons residing in the building.
High resolution satellite image prepared as tpk files, uploaded onto Lenovo Mapping Tablets. Mapping Teams captured every building and landmarks, completed the survey forms embedded with the apps and delineated EA polygons using the apps. This was never available within earlier version of Survey123.
Each completed EA was transmitted from field into ArcGIS Online LISGIS Portal. Data was downloaded from ArcGIS Online and exported onto the LISGIS Geodatabase. EA polygons were re-shaped and topological errors corrected in the office to derive a seamless digital frame for all 15 counties and Liberia and for the national frame.

Development Team Biography

Isaac Mwangangi joined UNFPA’s Liberia Office since January 2020 as Census Cartography/GIS Consultant, providing technical assistance to the 2022 Liberia Population and Housing Census. He has provided Cartography/GIS technical support for Kenya PHC, North Korea (DPRK) PHC, Sierra Leone twice PHC, Myanmar PHC, the Gambia PHC, Liberia PHC, South Sudan PHC.
Ms. Oluyemisi Olugbile started Census Mapping /GIS career with National Population Commission Dec 1989 and executed 2 censuses. Joined UNFPA Afghanistan as Census Technical Specialist Cartography and GIS Mapping 2007 to 2009. Chief GIS UNAMA, GIS Lead for UNFPA Somalia Pop Estimate Project, UNFPA Liberia Census GIS Lead Liberia NPHC.
Thomas Davis - GIS Director for LISGIS Liberia. He started his GIS Career with the United Nations Peace Keeping Mission in Liberia and joined LISGIS. He supervises a pool of GIS staff usually deployed to the field for cartographic mapping projects. He participated in the Liberia Census in 2008.