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Management requires measurement: Reducing flood damage by
improving response time
Soumya Balasubramanya, Yann Chemin, Lahi...
Pilot project in Nachchaduwa
• Objective: To assist the Irrigation Department
of Anuradhapura in reducing damages from
flo...
Pilot project aims
1. Construct IWMI-developed weather stations
2. Install weather stations to address ID’s information
ne...
1. Construct IWMI-developed weather stations
http://www.iwmi.cgiar.org/resources/mobile-
weather-stations/
2. Install weather stations to address ID’s needs
• Programmed to send SMS when rainfall
>10mm/hr; requested by ID-Nachcha...
2. Install weather stations to address ID’s needs
• Weather stations installed in
upper catchment of reservoir
• Improves ...
3. Document costs of mobile stations
Price/Unit (USD) Unit Cost
F08079 Serial Log Chip Open Source Data Logger Module* 9.5...
4. Understand cost-effectiveness
• Conservative estimate; assume intense rainfall occurs
once every 5 years; assume weathe...
Next steps
• Monitor hardware/software to ensure
systems are functioning before NE
monsoon commences
• Follow up with ID-N...
•
–
–
–
–
Next steps
Thank you!
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Management requires measurement: Reducing flood damage by improving response time

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Presented by IWMI's Soumya Balasubramanya (Researcher – Environmental Economics) at the launch workshop of the project on "Implementing open-source mobile weather stations to reduce flood damages and increase the preparedness of communities in Sri Lanka", held at IWMI-Headquarters in Sri Lanka on May 3, 2016

Published in: Environment
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Management requires measurement: Reducing flood damage by improving response time

  1. 1. Management requires measurement: Reducing flood damage by improving response time Soumya Balasubramanya, Yann Chemin, Lahiru Wijesinghe, Farah Ahmed, Mohamed Aheeyar, David Wiberg
  2. 2. Pilot project in Nachchaduwa • Objective: To assist the Irrigation Department of Anuradhapura in reducing damages from flooding. • Challenge: managing competing constraints – Tank needs to be maintained at FSL for irrigation – Many flashfloods in recent times – Rainfall information available once a day, as daily average
  3. 3. Pilot project aims 1. Construct IWMI-developed weather stations 2. Install weather stations to address ID’s information needs 3. Document costs of assembling, installing, activating, using, and maintaining mobile stations 4. Understand the cost-effectiveness of using such mobile stations 1. Highlight opportunities and constraints for scaling this solution to the entire country
  4. 4. 1. Construct IWMI-developed weather stations http://www.iwmi.cgiar.org/resources/mobile- weather-stations/
  5. 5. 2. Install weather stations to address ID’s needs • Programmed to send SMS when rainfall >10mm/hr; requested by ID-Nachchaduwa
  6. 6. 2. Install weather stations to address ID’s needs • Weather stations installed in upper catchment of reservoir • Improves response time to calculate peak runoff • Can calculate expected inflow into reservoir; create storage space to accommodate runoff • Can reduce damages caused from reservoir spilling
  7. 7. 3. Document costs of mobile stations Price/Unit (USD) Unit Cost F08079 Serial Log Chip Open Source Data Logger Module* 9.50 1 9.50 JST SH Jumper 6 Wire (GPS)* 2.95 1 2.95 GPS receiver* 39.95 1 39.95 Weather meter [1] 76.95 1 76.95 Weather Shield for Arduino* 39.95 1 39.95 RJ11 (x2), 6 pin connector for Weather Shield* 1.25 1 1.25 Arduino stackable header kit - R3* 1.50 1 1.50 8 Gb Memory Card* 6.85 1 6.85 Arduino Mega - Circuit Boards* 8.22 1 8.22 5A Solar Controllor* 9.59 1 9.59 Solar Panels* 27.39 1 27.39 Motorbike Battery* 26.70 1 26.70 Parts* 20.54 1 20.54 Steel stand structure* 47.93 1 47.93 GSM Module* 30.00 1 30.00 Total [2] 349.25 1 349.25 [1] To be replaced every three years in SL [2] Entire weather station to be replaced every 10 years (recommended) Equipment
  8. 8. 4. Understand cost-effectiveness • Conservative estimate; assume intense rainfall occurs once every 5 years; assume weather stations replaced every 3 years • Post-disaster rehabilitation expenditures by government (financial value of damages) • Run scenarios—with reduction of 10% in post-disaster expenditures due to better management CER =2 • If economic value of damages is considered; then even more cost-effective
  9. 9. Next steps • Monitor hardware/software to ensure systems are functioning before NE monsoon commences • Follow up with ID-Nachchaduwa to understand how text messages were used
  10. 10. • – – – – Next steps
  11. 11. Thank you!

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