Transcript 4. Survey & Mapping Activities….

By
Sultan Mohammed
Director General
Ethiopian Mapping Agency
January 2011
Hyderabad, India
1. Introducing the Ethiopian Mapping Agency (EMA)
Organizational Background
 The origins of the Ethiopian Mapping Agency (EMA)
date back to1954 when a small mapping unit was
established under the Ministry of Education which later
(in 1956) was reorganized as the Mapping and Geography
Institute of Ethiopia under the Ministry of the Interior.
Since then, it has passed through various organizational
setups until its establishment as an autonomous agency by
a Proclamation of the Government of Ethiopia in 1980.
1. Mandate









Under the Proclamation, EMA is mandated to collect, transform,
generate, store & disseminate the following sets of Fundamental
Geospatial Data sets in Ethiopia:
Geodetic Control Networks (Ground Control Points)
Remotely Sensed Imagery (Aerial Photographs, Satellite Imagery)
Topographic (Base) Maps
Thematic Maps
Hypsography (Contours, DEM, Spot Heights, etc.)
Administrative Boundaries (International, Regional, Zonal & District)
Geographic Names
Atlas (National, Regional, etc.)
Mandate Cont’d




Furthermore, EMA is the authorized Agency of the Federal
Democratic Republic of Ethiopia empowered to:
Certify duly qualified person or organization to undertake
surveying or mapping activities.
Certify and approve all fundamental geo-information
data sets produced by duly qualified person or
organization.
Supervise and coordinate any fundamental geoinformation data set production activities undertaken
within Ethiopia by any duly qualified person.
2. EMA Vision & Mission
Vision
“to become a reliable and prime source of
geospatial information products and services in
Ethiopia, and there by to be recognized as a
centre of excellence in the field in Africa.”
3. EMA Vision & Mission
Mission
“To satisfy the requirements of our customers by
generating and delivering best quality and
contemporaneous geospatial information
products and services every time, on time and
at low cost, and to regulate the quality and
standards of GIS products in Ethiopia. ”
3. EMA Organization Structure
Director General
Quality & Standards
Directorate
IT Directorate
Remote Sensing
& GIS
Directorate
Surveying
Directorate
Mapping
Directorate
Planning, & Budget
Directorate
Audit
Directorate
Women Affairs
Directorate
Human Resources
Directorate
Finance, Purchase &
Materials Management
Directorate
Communications &
Business Development
Directorate
4. Survey & Mapping Activities in Ethiopia

Surveying

Establishment of the National Geodetic Network
 The first stage of geodetic survey in Ethiopia was carried out during 1957 -1961,
covering over 30% of the country and straddling the Blue Nile Watershed in
North–South and East–West direction tying the network to the 30th Meridian Arc
Adindan Datum. This was extended further to the rest of the country over the
years in connection with the 1:50k mapping project and to date some 3,000
points have been established.
 The hypsometric data of the national leveling network is interconnected with the
Alexandria Datum and the sea level of the Red Sea Ports of Djibouti and Asab.
4. Survey & Mapping Activities…

Distribution of Ground Control Points
4. Survey & Mapping Activities….
Recently Established Primary GCPs (48 Hrs GPS Observation)
4. Survey & Mapping Activities….
Mapping
 In the history EMA the first extensive mapping activity
started
in
1956
with
the
Blue
Nile
River
Basin
Investigation Project covering an area of 300,000 km2
with aerial photography at a scale of 1:50,000.
 In 1963, the mapping of the country with 1:250,000 scale
map started and the full coverage was completed in 1972.
These map series covered the whole country in 73 map
sheets.
4. Survey & Mapping Activities….


Mapping
Since 1971, the Ethiopian Mapping Agency
has been engaged in producing standard
national topographic maps series at scale of
1:50,000. To date about 85% of the country
has been mapped in this scale.
4. Survey & Mapping Activities….
1:50k coverage
4. Survey & Mapping Activities….

Currently Available Maps
 1:2,000,000
scale wall map of Ethiopia
 1:1,000,000 scale maps (10 sheets covering the whole country)
 1:250,000 scale maps (75 sheets covering the whole country)
 1:50,000 scale maps (1340 sheets covering 85% of the
country)
 Various large scale maps (1:2,000 to 1:25,000) of major cities
and areas of interest.
5. Ongoing/Planned Survey & Mapping Initiatives

Surveying
 Densification

of the existing Geodetic Network
About 120 additional 1st Order GCPs
 12
Additional CORS
 10,000
2nd and 3rd Order GCPs.
5. Ongoing/Planned Survey & Mapping Initiatives
Existing & Planned CORS
5. Ongoing/Planned Survey & Mapping Initiatives
Existing & Planned 1st Order GCPs
5. Ongoing/Planned Survey & Mapping Initiatives

Mapping
Analogue to Digital Conversion of existing Maps
 Updating of 1:50,000 scale Maps
 1:100,000 scale Land Use/Land Cover Mapping of the Country
using satellite imagery.
 1:25,000 and 1:10,000 scale topographic and orthophoto
mapping of the Country via Aerial Photography & Ground
Survey.
 Large scale mapping (1:2,000 to 1:5,000) of towns and other
development corridors.
 Further to these activities EMA is currently engaged in the
preparation of the 3rd Edition National Atlas of Ethiopia.
