{
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 "createdAt": "2026-08-12T00:00:00Z",
 "description": "Append-only Evidence Passport records. Old revisions are immutable; corrections create a new revision and preserve the previous permalink.",
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  "type": "project",
  "id": "dar-es-salaam-ramani-huria",
  "title": "Ramani Huria Community Flood Mapping",
  "canonicalUrl": "https://1001smartcities.org/projects/dar-es-salaam-ramani-huria/"
 },
 "currentRevisionId": "2026-10-14-baseline",
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   "changeType": "baseline",
   "summary": "Created the first structured Evidence Passport with 11 claims and 6 source dossiers.",
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     "summary": "Added claim-level evidence mapping and source dossiers."
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     "status": "completed",
     "outcome": "succeeded",
     "evidenceGrade": "peer-reviewed",
     "timeline": {
      "started": 2015,
      "ended": 2020
     }
    },
    "governance": {
     "operator": "Ramani Huria / Humanitarian OpenStreetMap Team (OMDTZ)",
     "actorTypes": [
      "civil-society"
     ],
     "fundingModel": "grant",
     "fundingDescription": "World Bank / GFDRR + UK DfID (Tanzania Urban Resilience Programme)",
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     "ownership": null,
     "decisionRights": null,
     "exitConditions": null
    },
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      "field": "snippet",
      "text": "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",
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      "text": "By early 2019 it had mapped about 49 of the city's 90 wards and some 450,000 buildings",
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      "text": "the city's multi-agency emergency team DarMAERT still uses the flood atlases in disaster response",
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      "supportNote": "The September 2025 retrospective says DarMAERT uses the Ramani Huria atlas to support field response during disasters and quotes a DarMAERT member.",
      "caveat": "Reported by OMDTZ, the organisation that grew out of the project.",
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      "text": "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",
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      "text": "it keeps updating OpenStreetMap through volunteer mapathons and contract projects such as a World Bank-supported waste-data survey",
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      "text": "A peer-reviewed 2020 study by researchers at TU Delft and Deltares, with one co-author from the Humanitarian OpenStreetMap Team, found that adding the project's community-mapped drainage data made a neighbourhood flood model match validation data better than a run on terrain data alone",
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      "text": "at a level of detail it called inaccessible in many data-scarce places",
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      "text": "In 2025 DarMAERT described using the project's 2018 flood atlas to identify flood-prone areas and guide responders",
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      "text": "but a map built between 2015 and 2020 ages with a fast-growing city, and keeping it current falls to volunteers and one-off contracts",
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      "title": "Ramani Huria (official project site, OMDTZ)",
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       "value": "Project description: trains local university students and community members to map Dar es Salaam on OpenStreetMap for flood prevention and response; part of the Tanzania Urban Resilience Programme of DFID and the World Bank, supported by GFDRR and guided by the Humanitarian OpenStreetMap Team.",
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      "title": "Humanitarian OpenStreetMap Team — Urban flood resilience: Ramani Huria",
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      "title": "World Bank — Ramani Huria: the atlas of flood resilience in Dar es Salaam",
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       "publishedAt": "2019-01-16",
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       "type": "descriptive-source-note",
       "value": "Case study: since 2015 the project mapped 49 of 90 wards (about half the city), about 450,000 buildings and 1,700 schools; 470 university students trained and more than 300 Red Cross members involved.",
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      "id": "src-e058a4f398bf2e82",
      "title": "OpenMap Development Tanzania — 'Long-Lasting Impact of Ramani Huria Project' (Sept 2025 retrospective)",
      "url": "https://omdtanzania.medium.com/long-lasting-impact-of-ramani-huria-project-a-look-back-at-how-community-map-data-generated-from-e6bd6e668b3d",
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       "publishedAt": "2025-09-17",
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       "type": "descriptive-source-note",
       "value": "OMDTZ retrospective: the World Bank-funded project ran 2015–2020; DarMAERT uses the 2018 atlas to support field response; data collected 2015–2020 is outdated in fast-growing areas; OMDTZ updates OpenStreetMap through mapathons, Mapillary imagery and contract projects such as World Bank-supported solid-waste data collection.",
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      "id": "src-132d694a23b43f9e",
      "title": "Petersson et al., \"Community Mapping Supports Comprehensive Urban Flood Modeling for Flood Risk Management in a Data-Scarce Environment\", Frontiers in Earth Science",
      "url": "https://www.frontiersin.org/journals/earth-science/articles/10.3389/feart.2020.00304/full",
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       "publishedAt": "2020-07-21",
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       "type": "descriptive-source-note",
       "value": "Peer-reviewed study (TU Delft, Deltares, Humanitarian OpenStreetMap Team): Ramani Huria's community-mapped drainage data made a neighbourhood flood model correspond better with validation data than a terrain-only run; flood-extent surveys suit community mapping, drainage dimensions need trained mappers.",
       "exact": false
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     "claimsTotal": 11,
     "claimsMapped": 11,
     "sourcesTotal": 6,
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     "sourcesWithPublicationDate": 3,
     "sourcesWithArchive": 0,
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    },
    "limits": [
     "Publisher names and source languages have not yet been classified; domains are recorded without guessing.",
     "Existing source notes are descriptive locators, not page- or paragraph-exact citations.",
     "A missing archive, publication date or content hash is shown as null rather than inferred.",
     "The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim."
    ]
   }
  }
 ]
}