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

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. 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

4. Existing Flood Forecasting-India
Gauge to gauge Correlation
Base
Station
Forecast
Station

5. Existing Flood Forecasting-India
Gauge to gauge Correlation

6. 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.)

7. Flood Forecasting: Flood Classifications
Warning Level
Danger Level
Highest Flood Level
Low Flood
High Flood
Unprecedented Flood
Moderate Flood
0.5 meter

8. Flood Forecasting: eSWIS

9. Flood Forecasting: eSWIS

10. Existing Flood Forecasting-India
Gauge to gauge Correlation

11. Existing Flood Forecasting-Shortcomings

12. 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.

13. Page
13
Danger
Line
Base
Station
Existing Flood Forecasting-Shortcomings

14. Integrated Flood Forecasting Model

15. Integrated Flood Forecasting Model

16. Sunil KUMAR
MANY THANKS
November 29th
2016 – IITM, Pune