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UID:pretalx-foss4g-europe-2024-UCEL89@talks.osgeo.org
DTSTART;TZID=EET:20240703T150000
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DESCRIPTION:In 2024\, Ireland's Environmental Protection Agency (the EPA)\,
  in collaboration with Compass Informatics\, began creating a new national
  river network using highly accurate vector data provided by the national 
 mapping agency Tailte Éireann. This will replace the current river networ
 k based on 50\,000 scale data. \n\nThe existing river network contains aro
 und 85\,000 Km of water channels\, whereas the new dataset is almost 125\,
 000 Km in length. However\, the new dataset contains gaps where water flow
  is not visible\, such as through culverts under roads\, and lacks essenti
 al attributes required for environmental monitoring such as flow direction
  and stream order. Currently\, a project is underway to join gaps in this 
 dataset\, create flow lines through waterbodies such as lakes and transiti
 onal waters\, add missing features\, and connect the network through groun
 dwater aquifiers. \n\nAn on-line GIS editing portal was developed to suppo
 rt the project using open-source software\, which will be the focus of the
  talk. A front-end web GIS was developed using OSGeo projects OpenLayers a
 nd GeoExt\, and other open-source geospatial JavaScript libraries includin
 g cpsi-mapview.\nThe backend uses MapServer and Python web services\, buil
 ding on numerous open-source geospatial libraries including NetworkX\, Sha
 pely\, skgeom\, and two libraries created by Compass Informatics: Wayfarer
 \, a Python library for analysing geospatial networks\, and Cascade\, a Py
 thon library for applying stream orders to vector networks. Cascade will b
 e released as an open-source library as part of this project. \n\nUpon com
 pletion\, the new river network will enhance the EPA's modelling and asses
 sment capabilities across water and environmental domains. This includes s
 ediment and flow modelling\, catchment assessments\, water quality monitor
 ing\, and delineation of river waterbodies. The new network will benefit m
 any other organisations for applications such as fisheries and flood manag
 ement and become a key component of Ireland's national data infrastructure
 .
DTSTAMP:20260422T233149Z
LOCATION:GEOCAT (301)
SUMMARY:Creating a New River Network for Ireland - Seth Girvin
URL:https://talks.osgeo.org/foss4g-europe-2024/talk/UCEL89/
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