How to: JOSM (Java OpenStreetMap Editor)

JOSM (Java OpenStreetMap Editor) is a desktop application to conduct mapping activities, the data from which can be added to OpenStreetMap (OSM). It is an open source editor, written in Java. While initially the interface may seem daunting compared to some other editors, JOSM offers many features which are extremely useful and isn’t too difficult to master. Another major benefit of JOSM is that mapping can be done offline, unlike with other editors such as iD or Potlatch. This has been very useful when mapping Dar es Salaam as our mappers do not…Read more

Community mapping presented to UDSM Masters students

Ramani Huria was excited to be invited by the University of Dar es Salaam (UDSM) to present on digital community mapping to GIS Masters students on 29th of February, 2016. The session was facilitated by Dr. Festus Ndumbaro, university lecturer on Cartography and GeoVisualization. Ramani Huria presented on ‘Web Maps’ and led a discussion with the students, allowing for knowledge transfer between graduated and current students from UDSM. The Ramani Huria team began by giving an overview of community mapping they are facilitating on Dar es Salaam, with the focus on flood resilience.…Read more

How to! A series of blog posts on how to use mapping technology

Ramani Huria uses a range of mapping technologies to collect, process, and share our maps. We strongly believe in the ethos of open source, and when possible endeavour to use these tools in our work. Open source also has the added benefit of allowing anyone who is interested in mapping to learn our processes and either contribute to Ramani Huria or apply it to mapping work elsewhere. In a series of ‘how to’ posts, we’ll be detailing the tools we use and how to use them. The posts will be rolled out over…Read more

How to: Data collection tools

 There are many data collection tools you can use to gather the information required to make maps, depending on your needs and resources. Working in Dar es Salaam, the Ramani Huria team have developed a systematic approach to collect data from a variety of sources and allowing us to develop accurate & sophisticated maps. In this how to blog post, we will give you information about the tools we use specifically to map flood-prone wards of the city and the collection of data for flood resilience. All the data collected with these tools…Read more

How to: HOT’s OSM Export Tool

The HOT's OSM Export tool is a tool created by Humanitarian OpenStreetMap Team (HOT) that allows you to create custom OpenStreetMap (OSM) exports, you can download up-to-date maps for GIS analysis or use in GPS devices and/or smartphones. The OSM data available from the tool is updated at one minute intervals so very accurate and a number of file formats are available for exporting data in, including Esri SHP, Garmin IMG, Google KMZ, OSM PBF and SQlite SQL. Some of the features include the ability to: create customized maps with tags and markers…Read more

Red Cross Volunteers Active in Mapping Vingunguti

Vingunguti is an administrative ward in Ilala district in western Dar Es Salaam and according to the 2012 census has a population of 106,946. Vingunguti ward is a flood prone area of Dar es Salaam and many settlements within it are informal. The Msimbazi River flows around the West and North boundary of the ward, and during rainy season is a major cause of flooding. Launching mapping in Vingunguti Ramani Huria launched mapping in Vingunguti with a community forum taking place on 11th September 2015. Red Cross volunteers were excited to be present…Read more

How To: OSM Tasking Manager

Throughout the world, many people contribute to the collaborative community of OpenStreetMap. For anyone who is interested in volunteering their time to map unmapped parts of the world, OSM Tasking Manager is a great way to find projects to assist on. OSM Tasking Manager ( is a mapping tool designed and built to coordinate mapping by Humanitarian OSM Team volunteers, making it easier for mappers to work together and avoiding conflicts in areas in the process of being mapped. The purpose of the tool is to divide up a mapping job into smaller…Read more

#TanzaniaCfR: Coding for Flood Resilience

CfR Fellows and Mentors Dar es Salaam and Stone Town are the two primary cities of Mainland Tanzania and Zanzibar, with populations of 5.5 million and 150,000 respectively. Each of these cities and their country have unique challenges and hazards. Dar es Salaam for instance is challenged by bi-annual flooding, impacting many thousands of its citizens every year. In response to this, the World Bank, GFDRR, Humanitarian OpenStreetMap Team and the Red Cross are supporting the Tanzanian Commission of Science and Technology, Buni Innovation Hub, Dar es Salaam City Council, Ardhi University and…Read more

Mapping Tabata Ward

Ramani Huria began mapping Tabata ward on 7th October, and completed mapping on 6th November 2015. Tabata is an administrative ward in Ilala district in western Dar Es Salaam and according to the 2012 census has a population of 46,228. Mapping was launched in the ward with an opening community forum, taking place at the ward office, and attendance included: Tabata Ward Executive Officer (WEO); eight Mtaa Executive Officers (MEOs), five Mtaa chairmen; eight community members; and representatives from the Ramani Huria team. Active mapping started on 12th October with data collection and…Read more

Ramani Huria volunteers support #HapaUsafiTu

Independence Day and Republic Day in Tanzania falls on the 9th of December, typically a day off work with many people gathering at the National Stadium to watch parades match in front of the President. Dances are performed and a torch is carried up Mount Kilimanjaro, symbolising liberty and self-determination of the nations in Africa. However, in 2015, for the first time, the day will be celebrated in a very different way. Recently elected, President Magufuli declared that celebrations of Independence Day and Republic Day would be a chance for all citizens of…Read more