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Ramani Huria is community-based mapping project in Dar Es Salaam, Tanzania, training university students and local community members to create highly accurate maps of the most flood-prone areas of the city using OpenStreetMap. [1]
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Ramani Huria is community-based mapping project in Dar Es Salaam, Tanzania, training university students and local community members to create highly accurate maps of the most flood-prone areas of the city using OpenStreetMap. [1]
The city of Dar es Salaam is on the coast of Tanzania and in the rainy season is vulnerable to large scale flooding. Additionally, there are no current or reliable maps which can be used by aid respondents in the event of flooding. [2] Maps are created specifically in flood prone wards with the aim of providing information for flood resistance. [3] [4] The current population of Dar es Salaam is estimated at over 6 million with a current annual population growth of 5.7%, [5] resulting in 70% of the city being of informal settlements. [6] Ramani Huria is putting these informal settlements on the map, along with drainage systems, roads, building features, and district boundaries.
Ramani Huria 1.0 began in 2015, with the second phase, Ramani Huria 2.0 beginning in July 2017. In the first six months of Ramani Huria 2.0, over 51,000 buildings were mapped, and over 2000 community surveys were conducted.
The project uses a number of mapping tools including OpenStreetMap, InaSAFE, drone imagery, [7] OpenMapKit and OpenDataKit.
Ramani Huria trains university students and local community members in mapping tools to create highly accurate maps which is open and accessible to everyone. To achieve this, the Ramani Huria team works closely with community members throughout the data collection process. Community members are trained on free, open source smartphone applications, such as OpenMapKit and Open Data Kit, to use for data collection. The team check the GPS accuracy of the smartphones and provide internet scratchcards to guarantee good connectivity. Supported by the Ramani Huria team, community members collect data on their phones from individual households whilst accompanied by the Community Leader ("Mjumbe" in Swahili) for that area. Survey questions measure the history, impact and cause of flooding in that area. All data collected by the Ramani is free and accessible for anyone to use on OpenStreetMap
Ramani Huria uses ODK to collect information on the highways. This includes records of formal and informal street names.
Two teams coordinate to collect and verify the data. The first team uses ODK forms to send collected forms to the server, and the second team undertakes data cleaning and uploads the clean data to OpenStreetMap.
Ramani Huria has completed field mapping, quality checks, and data cleaning for the drainage systems in twelve wards of Dar es Salaam. Quality checks are conducted using the Deltares Hydro-OSM tool, a toolbox to convert OpenStreetMap data into data layers that can be used for hydrological and hydraulic modelling.
A work-in-progress atlas of the 450 Sub-Wards in the city has been developed which is intended for community resilience planning. The following wards of Dar es Salaam have been mapped and data is available both through OpenStreetMap and the Ramani Huria website. [8]
The project works with a number of partners to conduct mapping and utilise the maps created. Partners include: Tanzania Commission for Science and Technology; The University of Dar es Salaam; Ardhi University; Sokoine University of Agriculture; The City of Dar es Salaam; Buni; The World Bank; The Global Facility for Disaster Reduction and Recovery (GFDRR), Data Zetu Archived 2018-03-19 at the Wayback Machine ; and Humanitarian OpenStreetMap Team.
Dar es Salaam is the largest city and financial hub of Tanzania. It is also the capital of the Dar es Salaam Region. With a population of over five million people, Dar es Salaam is the largest city in East Africa and the sixth-largest in Africa. Located on the Swahili coast, Dar es Salaam is an important economic center and one of the fastest-growing cities in the world.
Kariakoo is an administrative ward of the Ilala Municipical Council of the Dar es Salaam Region in Tanzania. Jangwani ward and Mchafukoge ward form the ward's northern and eastern boundaries. The Gerezani and Mchikichini wards border the ward to the south and west respectively. The ward is the home of Simba Sports Club. The name is derived from the swahilization of the British colonial occupation's "Carrier Corps", that used to be based in the area. Today, Kariakoo is mainly known for its large market that spans several city blocks. According to the 2012 census, the ward has a population of 13,780.
Dar es Salaam Region is one of Tanzania's 31 administrative regions and is located in the east coast of the country. The region covers an area of 1,393 km2 (538 sq mi). The region is comparable in size to the combined land and water areas of the nation state of Mauritius Dar es Salaam Region is bordered to the east by Indian Ocean and it is entirely surrounded by Pwani Region. The Pwani districts that border Dar es Salaam region are Bagamoyo District to the north, Kibaha Urban District to the west, Kisarawe District to the south west and Mkuranga District to the south of the region. The region's seat (capital) is located inside the ward of Ilala. The region is named after the city of Dar es Salaam itself. The region is home to Tanzania's major finance, administration and industries, thus the making it the country's richest region. The region also has the second highest Human Development Index in the country after Mjini Magharibi. According to the 2022 census, the region has a total population of 5,383,728 and national census of 2012 had 4,364,541. The region has the highest population in Tanzania followed by Mwanza Region.
Kinondoni District, officially the Kinondoni Municipal Council is one of five districts of the Dar es Salaam Region of Tanzania. The district is bordered to the north by Bagamoyo District and Kibaha of Pwani Region, to the east by the Indian Ocean, the west by Ubungo District, and to the south by the Ilala District. The district covers an area of 269.5 km2 (104.1 sq mi). The district is comparable in size to the land area of Malta. The administrative seat is Ndugumbi. The district is home to one of the best preserved Medieval Swahili settlements, Kunduchi Ruins, headquarters for the National Muslim Council of Tanzania (BAKWATA) and Makumbusho Village Museum. Considered the cultural center of Dar es Salaam, Kinondoni District is also regarded the birthplace of the musical genre of Singeli. In addition the district is one of two districts in Dar es Salaam that has a National Historic Site, namely the Kunduchi Ruins.The 2012 National Tanzania Census states the population for Kinondoni as 1,775,049.
Temeke District, officially the Temeke Municipal Council is one of five districts of the Dar es Salaam Region of Tanzania. Temeke is bordered to the south by the Mkuranga District of the Pwani Region, to the north by the Indian Ocean, and to the northwest by the Ilala District. Temeke's eastern boundary is shared by Kigamboni District. The district covers an area of 150.4 km2 (58.1 sq mi). The district is comparable in size to the land area of Cook Islands. The administrative seat is Miburani. The district is home to the University of Dar es Salaam's School of Education, the National Stadium, the largest stadium in the country, Port of Dar es Salaam the largest port in the country, and The Chamazi Stadium the largest privately owned stadium. The 2012 National Tanzania Census states the population of the district as 1,205,949.
Bagamoyo District Council is one of eight administrative districts of Pwani Region in Tanzania. The District covers an area of 945 km2 (365 sq mi). The district is surrounded by the Chalinze District to the north and west, the Zanzibar Channel to the east, the Kibaha District to the south, and the Kinondoni District to the south-east in the Dar es Salaam Region. The district is comparable in size to the land area of Turks and Caicos Islands. The district capital is at Bagamoyo. 1n 2016 the Tanzania National Bureau of Statistics report there were 106,484 people in the district, from 311,740 in 2012, of which 97,660 where in current district wards. The decrease being from splitting of the district and creation of the Chalinze District in 2015.
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Tabata is an administrative ward of the Ilala Municipical Council of the Dar es Salaam Region in Tanzania. The ward is bordered to the north by the Ubungo MC wards of Makuburi and Mabibo. Kigogo of Kinondoni MC form the eastern boundary of the ward. Vingunguti and Buguruni are to the south. lastly, the Segerea and Kimanga wards in the west. According to the 2012 census, the ward has a total population of 74,742.
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