CHE加强了埃布罗河流域的防洪和管理

Confederación Hidrográfica del Ebro (CHE) Early Warning System for flood prevention and managementin the Ebro river basin Confederación Hidrógrafica del Ebro (CHE) is the water authority thatmanages, regulates and maintains the Ebro river basin, which coversa surface area of around 85,000 km2 and takes in 347 large rivers innortheastern Spain. It is the most extensive watershed in the countryand one of the largest in the European Mediterranean, accountingfor 17% of the Spanish peninsula territory where around 3.2 millionpeople live. The challenge The Ebro river basin provides a substantial amount of Spain’s waterresources. Its main river, which is 930 km long, flows through differentclimate zones in the north-east of the Iberian Peninsula, namely theAtlantic, the Mediterranean and a transition area characterized by abroad range of precipitation and transpiration rates. Program highlights: •Specific warnings and alerts forstakeholders•Earlier activation of disastermanagement protocols•Detection of potentially affectedinfrastructures and facilities•Advanced dam managementto reduce costs and protectcommunities•Post-event flood responseevaluation Thebasin’s unique combination of geomorphological andclimatological factors, along with the growing impact of climatechange, explain the advent of river, pluvial and flash floods in thearea throughout the year. The aim of this project was to reduce flooddamage and provide an early warning system (EWS) for civil defenseand other stakeholders managing disaster situations in the Ebro riverbasin. The solution The deployment of theEarly Warning System (EWS)application,which is part of theXylem Vue platform, provides CHE with earlywarnings during floods in a variety of scenarios. The tool combinesdifferent technologies to compute, analyze and provide warningsand recommendations based on large amounts of data, provided byhydrological and meteorological sensors, rainfall radar, and weatherforecasting models. The application uses cloud computing and big data analytics forreal-time, probabilistic hydraulic and hydrological modelling. It alsoapplies geo-statistics and machine-learning techniques to improvedata quality and leverages its AI inference engine and heuristics forbetter management recommendations. It runs every ten minutes foradvanced preemption and includes a comprehensive, user-friendlyinterface for enhanced risk warning and awareness in the river basin. VIGILAEbro rainfall maps. Use of geo-statistical andmachine learning correction algorithms. TheEWS generates flood maps for different return periods,recommends actions for dams to minimize risks and damage, andhelps to send warnings and alerts to mobile telephones and websiteswhen necessary, depending on the type of users and their location. The results Thanks to this project, CHE can respond to different types of floods(localized heavy rainfall, river floods, with/without snowmelt) andanticipate events days or hours before they occur. The applicationforecastsflows and levels accurately and provides advanceinformation on potentially affected infrastructures and facilities, suchas bridges, roads, schools and commercial buildings. This enablesearlier activation of disaster management protocols that take intoaccount potentially affected infrastructures filtered by populationand cost. The performance of these management protocols, together with thatof entities, and communications and software systems, is evaluatedafter every event to optimize the planning of future efforts andinvestments. The EWS enables CHE to better understand the current and forecasthydrological status of the basin, and to reduce damage in dams thanksto advanced management, thus decreasing costs and minimizing thenumber of citizens affected. The implementation of the EWS application, referred to as ‘VIGILAEbro’by CHE, is in line with the European Floods Directive (2007/60/EC), which includes the need to develop Flood Risk ManagementPlans. Thanks to this application, CHE is reducing flood damageand responding to these events earlier to protect communities innortheastern Spain.