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IUKWC Workshop Nov16: Developing Hydro-climatic Services for Water Security – Session 1 – Item 4 - S_Kumar

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IUKWC Workshop November 2016: Developing Hydro-climatic Services for Water Security
Session 1.4 S Kumar

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IUKWC Workshop Nov16: Developing Hydro-climatic Services for Water Security – Session 1 – Item 4 - S_Kumar

  1. 1. Sunil KUMAR Director, National Water Academy, Pune November 29th 2016 – IITM, Pune Existing Indian Flood Forecasting Methodology and Way Forward India-UK Water Centre Workshop (29 Nov- 01 Dec 2016)
  2. 2. Flood Forecasting: India • CWC is National Flood Forecasting Agency • 175 flood forecasting stations o 147 Water level forecasting station o 28 inflow forecasting station • Gauge-to-Gauge Correlation
  3. 3. Existing Flood Forecasting-India Gauge to gauge Correlation Base Station Forecast Station
  4. 4. Existing Flood Forecasting-India Gauge to gauge Correlation
  5. 5. Flood Forecasting: Flood Levels • Danger Level (0.3 m below the plinth level or 10 year Return period discharge) • Warning Level (0.6 m to 1.0 m below the danger level) • Highest Flood Level (highest flood ever recorded) • Very High Flood (100 year return period discharge) • Flood Plain (Land adjoining the channel which is inundated only during floods.)
  6. 6. Flood Forecasting: Flood Classifications Warning Level Danger Level Highest Flood Level Low Flood High Flood Unprecedented Flood Moderate Flood 0.5 meter
  7. 7. Flood Forecasting: eSWIS
  8. 8. Flood Forecasting: eSWIS
  9. 9. Existing Flood Forecasting-India Gauge to gauge Correlation
  10. 10. Existing Flood Forecasting-Shortcomings
  11. 11. Existing Flood Forecasting-Shortcomings • Lead time is insufficient for appropriate disaster preparedness • Rainfall not incorporated. • Very limited coverage. • No information of depth, extent, duration of flooding. • Only riverine flooding considered.
  12. 12. Page 13 Danger Line Base Station Existing Flood Forecasting-Shortcomings
  13. 13. Integrated Flood Forecasting Model
  14. 14. Integrated Flood Forecasting Model
  15. 15. Sunil KUMAR MANY THANKS November 29th 2016 – IITM, Pune

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