Y731 (1: 50 000 scale) Topographic Maps represents the main 1: 50 000 scale mapping covering large parts of Kenya. The maps illustrate the key topographic features both natural and man made. There have been multiple versions of the maps published. Not all versions of the maps are held by the Geodata Centre. Those which are currently held (November 2018) are listed. Publishers OSD Government of the United Kingdom (Crown Copyright); OSD(K) Government of the United Kingdom for the Government of Kenya; OSD(T) Government of the United Kingdom for the Government of Tanzania; OSD(U) Government of the United Kingdom; USD Department of Land and Surveys Uganda; ING French National Geographic Institute for the Government of Kenya; JICA Japan International Co-operation Agency for the Government of Kenya.

Y503 series of 1:: 250 000 scale topographic maps. Each map is a compilation from pre-existing published topographic maps mosty at 1: 50 000 scale (detailed on each map face). Series includes Kaabong, Aloi, jinja, in Uganda which was compiled and published by The Department of Lands and Surveys in Uganda. These maps use the New Arc (1960) datus Clarke 1880 (Modified) Spheroid UTM zone 36. Series also includes Musuma in Tanzania which was compiled by the Ministry of Lands, Forests and Wildlife, Tanganyika. Arusha was compiled by the Ministry of Lands, Settlement and Water Development Tanzania. Lushoto was compiled by the Ministry of Lands Surveys and Water Tanganyika. Series also include Kapenguria, Nyeri, Chuka, Chismaio, published by War office and Air Ministry using Transverse Mercator, Clarke 1880 (UTM Zones 36 and 37). Garsen was published by the Ministry of Defence (United Kingdom). CRS System: Various: Transverse Mercator, Clarke 1880; Arc 1960 (Clarke 1880); Arc 1960 (Clarke 1880) Zone 36S; Arc 1960 (Clarke 1880) Zone 36N; Arc 1960 (Clarke 1880) Zone 37S; Arc 1960 (Clarke 1880) Zone 37N, Arc 1960 (Clarke 1880) Zone 38N

The Preliminary Plot 1: 50 000 scale map serises are the initial topographic maps developed for Kenya. They are nbased on air photographs captured by the Royal Air Force (United Kingdom). They are essentially black an dwhite maps showing a simple interpretation of the key topographic features. CRS: Transverse Mercator, Clarke 1880. Publishers: DCS Directorate of Colonial Surveys (United Kingdom Government); KS Kenya Survey; GSGS War Office (United Kingdom Government); DOS Directorate of Overseas Surveys (United kingdom Government) Except map A37 VI SW South Ndakathima which is in Arc (1960) Clarke (1880)

Y503 series of 1:: 250 000 scale topographic maps. Each map is a compilation from pre-existing published topographic maps mosty at 1: 50 000 scale (detailed on each map face). Series includes Kaabong, Aloi, jinja, in Uganda which was compiled and published by The Department of Lands and Surveys in Uganda. These maps use the New Arc (1960) datus Clarke 1880 (Modified) Spheroid UTM zone 36. Series also includes Musuma in Tanzania which was compiled by the Ministry of Lands, Forests and Wildlife, Tanganyika. Arusha was compiled by the Ministry of Lands, Settlement and Water Development Tanzania. Lushoto was compiled by the Ministry of Lands Surveys and Water Tanganyika. Series also include Kapenguria, Nyeri, Chuka, Chismaio, published by War office and Air Ministry using Transverse Mercator, Clarke 1880 (UTM Zones 36 and 37). Garsen was published by the Ministry of Defence (United Kingdom). CRS System: Various: Transverse Mercator, Clarke 1880; Arc 1960 (Clarke 1880); Arc 1960 (Clarke 1880) Zone 36S; Arc 1960 (Clarke 1880) Zone 36N; Arc 1960 (Clarke 1880) Zone 37S; Arc 1960 (Clarke 1880) Zone 37N, Arc 1960 (Clarke 1880) Zone 38N

Y503 series of 1:: 250 000 scale topographic maps. Each map is a compilation from pre-existing published topographic maps mosty at 1: 50 000 scale (detailed on each map face). Series includes Kaabong, Aloi, jinja, in Uganda which was compiled and published by The Department of Lands and Surveys in Uganda. These maps use the New Arc (1960) datus Clarke 1880 (Modified) Spheroid UTM zone 36. Series also includes Musuma in Tanzania which was compiled by the Ministry of Lands, Forests and Wildlife, Tanganyika. Arusha was compiled by the Ministry of Lands, Settlement and Water Development Tanzania. Lushoto was compiled by the Ministry of Lands Surveys and Water Tanganyika. Series also include Kapenguria, Nyeri, Chuka, Chismaio, published by War office and Air Ministry using Transverse Mercator, Clarke 1880 (UTM Zones 36 and 37). Garsen was published by the Ministry of Defence (United Kingdom). CRS System: Various: Transverse Mercator, Clarke 1880; Arc 1960 (Clarke 1880); Arc 1960 (Clarke 1880) Zone 36S; Arc 1960 (Clarke 1880) Zone 36N; Arc 1960 (Clarke 1880) Zone 37S; Arc 1960 (Clarke 1880) Zone 37N, Arc 1960 (Clarke 1880) Zone 38N

The Preliminary Plot 1: 50 000 scale map serises are the initial topographic maps developed for Kenya. They are nbased on air photographs captured by the Royal Air Force (United Kingdom). They are essentially black an dwhite maps showing a simple interpretation of the key topographic features. CRS: Transverse Mercator, Clarke 1880. Publishers: DCS Directorate of Colonial Surveys (United Kingdom Government); KS Kenya Survey; GSGS War Office (United Kingdom Government); DOS Directorate of Overseas Surveys (United kingdom Government) Except map A37 VI SW South Ndakathima which is in Arc (1960) Clarke (1880)

The Preliminary Plot 1: 50 000 scale map serises are the initial topographic maps developed for Kenya. They are nbased on air photographs captured by the Royal Air Force (United Kingdom). They are essentially black an dwhite maps showing a simple interpretation of the key topographic features. CRS: Transverse Mercator, Clarke 1880. Publishers: DCS Directorate of Colonial Surveys (United Kingdom Government); KS Kenya Survey; GSGS War Office (United Kingdom Government); DOS Directorate of Overseas Surveys (United kingdom Government) Except map A37 VI SW South Ndakathima which is in Arc (1960) Clarke (1880)

The Preliminary Plot 1: 50 000 scale map serises are the initial topographic maps developed for Kenya. They are nbased on air photographs captured by the Royal Air Force (United Kingdom). They are essentially black an dwhite maps showing a simple interpretation of the key topographic features. CRS: Transverse Mercator, Clarke 1880. Publishers: DCS Directorate of Colonial Surveys (United Kingdom Government); KS Kenya Survey; GSGS War Office (United Kingdom Government); DOS Directorate of Overseas Surveys (United kingdom Government) Except map A37 VI SW South Ndakathima which is in Arc (1960) Clarke (1880)

Y731 (1: 50 000 scale) Topographic Maps represents the main 1: 50 000 scale mapping covering large parts of Kenya. The maps illustrate the key topographic features both natural and man made. There have been multiple versions of the maps published. Not all versions of the maps are held by the Geodata Centre. Those which are currently held (November 2018) are listed. Publishers OSD Government of the United Kingdom (Crown Copyright); OSD(K) Government of the United Kingdom for the Government of Kenya; OSD(T) Government of the United Kingdom for the Government of Tanzania; OSD(U) Government of the United Kingdom; USD Department of Land and Surveys Uganda; ING French National Geographic Institute for the Government of Kenya; JICA Japan International Co-operation Agency for the Government of Kenya.

Series of 1: 100 000 scale topographic maps pubished between 1958 and 1978. Data was collated and published by War office and Air Ministry (United Kingdom) subsequently Ministry of Defence (United Kingdom)[GSGS]; Survey Kenya [SK]; Directorate of Overseas Surveys for the Kenya Government [D.O.S.] . Maps are projected using the East African Grids (Transverse Mercator(Clarke 1880); Arc (1960) (Clarke 1880). A small number of the maps are shown as using Arc (1950) (Clarke 1880) however, this dataum is usually used for map in Botswana, Malawi, Zambia and Zimbabwe. The map references for the sheets indicated to be in Arc (1950) (Clarke 1880) have been flagged to indicate this. Publishers: G.S.G.S. British War Office and Air Ministry/Ministry of Defence (United Kingdom); D.O.S. Directorate of Overseas Surveys for the Kenya Government; S.K Survey Kenya