Mapping Freetown's water network using OSM data Lightning talk - - PowerPoint PPT Presentation

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mapping freetown s water network using osm data
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Mapping Freetown's water network using OSM data Lightning talk - - PowerPoint PPT Presentation

Mar 14, 2024 542 likes •718 views

Mapping Freetown's water network using OSM data Lightning talk Alexandre Duclaux, July, 29th 2018 About us Based in Rabat, Morocco Since 2012 6 people International team and customers www.sige.ma Context Physical

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Mapping Freetown's water network using OSM data

Alexandre Duclaux, July, 29th 2018

Lightning talk

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About us

  • Based in Rabat, Morocco
  • Since 2012
  • 6 people
  • International team and

customers

www.sige.ma

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Context

Physical Mapping, Distribution System Condition Assessment and Hydraulic Modeling for Guma Valley Water Company (GVWC)

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Context

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Context

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Mission

Mapping

  • >100mm pipes
  • All Network components
  • <100mm and spaghetti pipes

as Offtake points

  • Encroaching structures
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Means

Data collection

100% Opensource software architecture Superior accuracy GNSS devices Up to 11 mappers at the same time

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Using Openstreetmap data

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Using Openstreetmap data

  • As basemap for Data

collection

  • To map encroaching

structures

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Using Openstreetmap data

To map encroching structures from :

  • Mapped

encroachments

  • Crossing pipe

VS OSM entities

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OSM data to be improved

Using Openstreetmap data

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Using Openstreetmap data

Hired 2 youth mappers

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Using Openstreetmap data

JOSM Mapping encroachnig structures Qualifiying encroachments

Potential encroachments

QField GIS DB OSM DB Pipes QGIS Buildings Private gardens Schools Hospitals Industrials. Mapped encroachments & pipes X OSM data

Updated encroaching structures Verified encroachments

Encroac hments

  • 1. verifying

encroachments and updating OSM data

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Using Openstreetmap data

Updated Buildings Private gardens Schools Hospitals Industrials. Verified encroachemnts X OSM data

Encroaching structures

GIS DB OSM DB QGIS

  • 2. Import

encroaching structures to the GIS database

Verified Encroac hments

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Youth mappers :

  • Jacob farna
  • Joseph Sorieson

Kamara Trained on JOSM Created buidings : 6602 Modified buildings : 2173 Retrieved encroching structures : 3847

Using Openstreetmap data

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Mapping Freetown's water network using OSM data

Alexandre Duclaux, July, 29th 2018

Thank you for your attention !