2015 flood event in the ebro basin - circabc.europa… · saih – dss & hydrology services...
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SAIH – DSS & HYDROLOGY SERVICES
2015 FLOOD EVENT IN
THE EBRO BASIN
Basin area: 85.362 Km2
Ebro river length: 930 km
EBRO BASIN GEOGRAPHICAL SITUATION
SAIH – DSS & HYDROLOGY SERVICES
350 points
12 points
250 points
200 points
75 points
EBRO BASIN MONITORING SERVICE
SAIH – DSS & HYDROLOGY SERVICES
350 points
12 points
250 points
200 points
75 points
SAIH – DSS & HYDROLOGY SERVICES
EFAS FORECASTING
European Flood Awareness System
AEMET FORECASTING
Espanish Meteorological Agency
OWN METEOROLOGICAL &
HYDROLOGICAL DATA
HYDROLOGICAL FORECASTING
EBRO BASIN
SAIH – DSS & HYDROLOGY Services of Ebro Basin Authority
ALERTS
MANAGEMENT
SAIH – DSS & HYDROLOGY SERVICES
2015 EBRO RIVER FLOOD EVENT
450 km2 flooded
40 million €
This flood returns every 10 years
SAIH – DSS & HYDROLOGY SERVICES
2015 FLOOD EVENT
reservoir management reducing peak flood harm reduction
Discharge comparative: with and without reservoir management
Estimated natural discharge
Estimated Discharge
Dis
charg
e
SAIH – DSS & HYDROLOGY SERVICES
2015 FLOOD EVENT
Discharge uncertainty: +-10% is accurate enough during flood events
Estimated discharge in real time
Estimated Discharge after analysis
Dis
charg
e
SAIH – DSS & HYDROLOGY SERVICES
2015 FLOOD EVENT
Gauging stations do not work fine during big flood events
Ebro river in Castejón Gauging Station
Secondary Flow
Main flow measured
Discharge uncertainty: +-10% is accurate enough during flood events
SAIH – DSS & HYDROLOGY SERVICES
2015 FLOOD EVENT
People are not very good at understanding concepts like probability,
uncertainty, and risk.
What can we do to help them understand, as they re-build in the floodplain,
that it is nearly certain they will be devastated again, we are only uncertain
about exactly how soon?
SAIH – DSS & HYDROLOGY SERVICES
EU FLOODS DIRECTIVE 2007/60
Measures to manage Flood Risk
• PREVENTION (Land use: expositition & vulnerability )
• PROTECTION (Dams, Civil structures)
• PREPAREDNESS (Early warning systems, Emergency plans)
• RECOVERY (Assurances, Repairing works, Lessons learned)
SAIH – DSS & HYDROLOGY SERVICES
Main Goals: Explain & Spread
Coordination
THANK YOU VERY MUCH
Mª Luisa Moreno Santaengracia
Área de Hidrología y Cauces Confederación Hidrográfica del Ebro
Zaragoza (SPAIN)
SAIH – DSS & HYDROLOGY SERVICES