This polygon shapefile represents areas containing a concentration of buildings and other structures in Senegal. The Global Map Senegal drainage version 2.0 was developed by using the Global Map Senegal version 1.0 and the International map serie at the scale 1000000 and the map scale 500 000. The Global Map Senegal version 1.0 Transportation layer was developed using The 1:1,000,000 Chart International series and The Digital Map 200000. Updating the data of version 1.0 using The 1:500,000 District Map series and 1:1,000,000 International Map series developed the Global Map Senegal version 1.1 Transportation layer. Updating the Global Map Senegal version 1.1 using 1:1,000,000 Topographic Maps developed the Global Map Senegal version 2.0 Transportation layer. 1.1: 2006-12-13, Version 2.0: 2012-07-25. The Global Map Senegal version 2.0 Boundaries layer was developed using the Digital Map 200000. The Global Map Senegal version 2.0 Population center layer was developed using The 1:200,000 Topographic Map. The Release of Global map Senegal Elevation layer series are as follows: Version 1.0: 2000-11-28, Version 1.1: 2006-12-13, Version 2.0: 2012-07-25Global Map data were developed under the cooperation of National Geospatial Information Authorities (NGIAs) of respective countries and regions.