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Lack of Real-Time Flood Monitoring in Mumbai UPSC NOTE

 


  • Mumbai, like many other cities in India, experiences frequent extreme rainfall events resulting in severe floods and waterlogging.

  • However, there is currently no system in place to monitor flood situations in real time, leading to difficulties in managing and responding to flooding.



Using Twitter as a Crowdsourcing Tool

  • A team of researchers led by IIT Bombay has found a way to monitor real-time flooding by crowdsourcing data from Twitter.

  • They developed an automated program to retrieve flood-related data from tweets, which includes water logging levels and location information.

  • This approach enables them to provide real-time information about flooding in Mumbai.


Study Details

  • The research findings, yet to be peer-reviewed, have been posted on the arXiv preprint server.

  • Dr. Subimal Ghosh and his team from the Department of Civil Engineering at IIT Bombay led the study.

  • They evaluated the usefulness of crowdsourced flood data by analyzing data from an extreme rainfall event on July 5, 2022.

  • Historical flood-related tweets were also used to generate flood maps for heavy rainfall events in recent years.

Complementing Existing Weather Stations:

  • Mumbai has a network of automatic weather stations that provide rainfall data at 15-minute intervals.

  • However, these stations do not provide information about waterlogging or flooding.

  • Crowdsourced real-time flooding data fills this gap and complements the existing weather station data.


Twitter Data Analysis:

  • Twitter users in locations with heavy rainfall and low elevations are more likely to tweet about waterlogging and flooding.

  • Crowdsourced data on flooding aligns consistently with rainfall data obtained from the automatic weather stations.

  • Specific hashtags, such as #MumbaiRains, #Mumbaiflood, and #Mumbaiflooddata, help extract relevant information from tweets.

Involvement of Volunteers and NGOs:

  • Around 80 volunteers from an NGO were trained to work as volunteered geographic information (VGI) participants.

  • They provided information about flood locations and water levels, enhancing the reliability of the crowdsourced data.

  • Open requests were also made to Twitter users to become volunteers and contribute flood-related information.

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Learnerz IAS | Concept oriented UPSC Classes in Malayalam: Lack of Real-Time Flood Monitoring in Mumbai UPSC NOTE
Lack of Real-Time Flood Monitoring in Mumbai UPSC NOTE
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