Ramani Huria Community Flood Mapping
This overview was generated with AI from the public sources listed below and checked against them before publication. It has not had a complete human fact-check — treat it as a starting point and follow the sources.
How this atlas is made · What “last verified” means · What “source-checked” means
Ramani Huria ('open map' in Swahili) trained roughly 470 university students and hundreds of Red Cross volunteers to map flood-prone Dar es Salaam onto OpenStreetMap using smartphones, drones and street-view surveys. Between 2015 and 2020 it mapped about 49 of the city's 90 wards and some 450,000 buildings, and the city's multi-agency emergency team DarMAERT still uses the flood atlases in disaster response. OMDTZ, the local NGO that grew out of the project, said in a September 2025 retrospective that rapid urban growth has left parts of the map outdated, and that it keeps patching OpenStreetMap through volunteer mapathons rather than a funded successor programme.
what does this mean?
The strongest source is the operator's or the city's own reporting — an official report, dataset or press release. It grades who did the looking — not how well the project went. All four grades →📊 Impact
Mapped ~49 of 90 wards (about half the city), ~450,000 buildings and ~1,700 schools to OpenStreetMap (2015-2020); data absorbed by national statistics and disaster-management bodies.
🎓 Lesson
The lasting value was the open dataset itself: community-generated maps outlived the funded programme and fed into national statistics and disaster-response planning.
Sources
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📎 Cite this project
1001 Smart Cities (2026). “Ramani Huria Community Flood Mapping” — Dar es Salaam, Tanzania. The Smart City Atlas. https://1001smartcities.org/projects/dar-es-salaam-ramani-huria/ (last verified 2026-08-07). Data: CC BY 4.0.
The underlying data is free to reuse with attribution — see the open data page.