S/N

Data

Source

Description

1

Image of Murtala Mohammed Airport Layout

Google Earth

5 m Resolution Raster Satellite Image.

2

Obstacles within 10 NM of Murtala

From Survey Record from the Survey Unit of Nigerian Airspace Management Agency (NAMA)

Point Coordinates Showing Obstacles in Microsoft Excel Spreadsheet

3

Obstacle Limitation Surfaces (OLS)

From the Airspace Planning Unit of Nigerian Airspace Management Agency (NAMA)

Vector Data Drawing Format

4

Digital Elevation Model (DEM)

United States Geological Surveys

Raster Data Showing the Vertical Section of the Study Area.

5

Topographic Map of Lagos (1:250,000)

Nigerian Federal Surveys

Extraction of Contour Lines to Vector Data Format.

8

Base Map (1:50,000)

Ministry of Land and Survey Lagos State

Administrative Map of the Study Area