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Enhancing Monsoon Flood Forecasting through Upstream Monitoring

Learn about the importance of upstream data for early warning during monsoon season. Discover accessible sources for monitoring river levels and rainfall upstream to improve preparedness. Find out how to access data and analyze patterns for better understanding of upstream-downstream dynamics.

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Enhancing Monsoon Flood Forecasting through Upstream Monitoring

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  1. Monsoon Floods Early Warning: Monitoring Rainfall and River Levels Upstream LCG DER Mtg. 16 July 2008 UN WFP/ Disaster Risk Reduction

  2. Overview • Why upstream monitoring important for Monsoon Monitoring, Early Warning, and Preparedness • Some easily accessible sources of rainfall and river levels upstream • Monitoring for awareness, and potential future analysis

  3. Why upstream monitoring is important ?

  4. Why upstream monitoring is important ? • In an average year, 844,000 million cubic metre of water flows into the country during the humid period (May to October) through the three main rivers the ganges, the Brahmaputra-Jamuna and the meghna. This volume is 95% of the total annual inflow. By comparison only about 187,000 million cu m of streamflow is generated by rainfall inside the country during the same period. • 95% of water from in-flow; 5% from rainfall in Bangladesh • Source: Banglapedia

  5. Where to find data on river levels upstream? • Indian Govmt. : Central Water Commission (CWC)

  6. Indian CWC; Sample OutputsSummary Report: Sites Above Warning Level

  7. Indian CWC; Sample Outputs

  8. Individual Station Level Data: Assam Guwahati

  9. Individual Station Level Data: Assam Dibrugarh

  10. Upstream River Flow Data: Dartmouth Flood Observatory http://www.dartmouth.edu/~floods/index.html

  11. Upstream River Flow Data: Dartmouth Flood Observatory: River Watch Data

  12. Rainfall Data Upstream: Indian Met Dept.

  13. India: IMD

  14. NASA TRMM Rainfall Estimates: Satellite Based

  15. NASA TRMM Rainfall Estimates: Satellite Based

  16. Closing Thoughts • Monsoon Flood Early Warning and Preparedness can be significantly improved via greater utilization of Upstream Data • Data availability is much better than most of us realise • Creative approaches (i.e. GIS etc …) should be used to better understand upstream-downstream dynamics; … i.e. significant events upstream, and timing… impacts downstream

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