Global Relief: ETOPO Global Relief Model / NOAA (2022-10-04). Ice surface elevation geotiff. Retrieved on 2022-12-13. / ETOPO_2022_v1_15s_N00W030_surface.tif, ETOPO_2022_v1_15s_N15E030_surface.tif
International border: GSHHG data version 2.3.7 / NOAA (2017-06-15). Shoreline / Coastline Resources. Retrieved on 2022-12-13. / gshhg-shp-2.3.7\WDBII_shp\h\WDBII_border_h_L1.shp
Intermittent rivers: GSHHG data version 2.3.7 / ibid. / gshhg-shp-2.3.7\WDBII_shp\h\WDBII_river_h_L08.shp
Regional border of Somaliland: SOMALILAND VULNERABILITY INDEX MAP / Ministry of Planning and National Development of Somaliland. SOMALILAND VULNERABILITY INDEX MAP. Retrieved on 2022-12-13.