Presenter: Tom Brouwer, FloodTags, Netherlands Video: https://youtu.be/81UqUcOlamM

1. Analyzing and Monitoring Water Related
Information using Online Media

2. JAKARTA 2013
Flood Early Warning System
"So…. where are the
floods?"

4. Waarom
hiermee gestart
Daily totals Indonesia "banjir"
0
100000
200000
300000
400000
1/10/2014 15-10-2014 29-10-2014 12/11/2014 26-11-2014 10/12/2014 24-12-2014 7/1/2015 21-01-2015 4/2/2015 18-02-2015 4/3/2015 18-03-2015 1/4/2015 15-04-2015 29-04-2015 13-05-2015 27-05-2015
Tweet peaks during big floods
0
3
6
9
12
1/29/2018 0:00 3/15/2018 0:00 4/29/2018 0:00 6/13/2018 0:00 7/28/2018 0:00 9/11/2018 0:0010/26/2018 0:00
15.000 unique water level
observations on identified
locations in 24h
Tweets/ second on floods
Rescue Operations Impact Causes
Without having to ask for any
reports!

5. helps organizations
benefit from online media content in
water and development projects

6. Collect from
Online Media
Analyse Content Share Results
Twitter, Facebook,
Online News,
Blogs, WhatsApp
Event Detection
Derive Locations
Validate & Filter
Online Dashboard
Open API

7. Collect ShareAnalyse
Twitter
Very valuable for real-time event
detection given the volume of
messages!
Created above all for private exchange.
However: Public Pages / Groups contain a
lot of useful content.
Online News
& Blogs
Information rich content, e.g. for
historic analysis of floods.
WhatsApp
Analysing and combining
information from dedicated
disaster management groups

8. Collect ShareAnalyse
Assessing Relevance
Clustering - Annotation - Classification
Detect Events
AnalyzeThreshold Exceedance
Derive Locations
Match GeoNames, Most likely location
Assess Reliability
Using Elevation data, Rainfall data &
Satellite Data
Topic based Filtering
Distinguishing Impact, Rescue
Operations & Causes a.o.
Flood Extent Mapping
High-res locations & Elevation data

9. Collect ShareAnalyse

10. Collect ShareAnalyse
Site: dashboard.floodtags.com

12. Philippines: Operational Dashboard for the
Red Cross Operations Centre in Manilla
.
Tanzania: History in online media for impact forecasting
for the Tanzania Red Cross
Translating weather
forecasts into forecasts of
impact
What happened with
similar weather in the
past?
Derive flood
location,
date
& impact
Database of
historic
flood events
Blogs
News Media

13. Social Media & Remote Sensing
• Calibrating RADAR Flood Extent
• Flood Extent + Local Impact
• Drought Monitoring
• Historic & Real-time

16. Online Media Image Analysis
• Filtering Junk
• Distinguishing between:
• Flooding
• Impact
• Rescue
• …..
• Deriving Locations & Water Depths
+

17. Analyzing and Monitoring Water Related
Information using Online Media