Urban Flood is one of the biggest environmental problems of the planet. It generates high negative impacts of various kinds: social, environmental and economic. These problems grow exponentially in megacities, since the disorderly occupation of land, coupled with the size of the population, make it extremely complex to control and to manage. Structural measures for …

Urban Flood Warning System Social Benefits Leia mais »

This paper aims to show the use of rainfall runoff modeling as an important methodology to optimize investments for flood control in the city of São Paulo. The city of São Paulo is the largest city in Brazil and one of the five largest cities in the world. However, this megacity has a chronic flood …

Use Rainfall Runoff Model as an Important Tool to Optimize Investments in Flood Control in a Megacity: São Paulo, Brazil Leia mais »

People confidence in flood forecasting systems is related to the quality and accuracy of the forecasts. These two properties are basically function of the set of models that produces the forecasts. If flood events are observed but not forecasted or forecasted but not observed, the alert can be considered an error by citizens not well …

Defining Real-Time Flood Alerts with Multicriteria Analysis Leia mais »

This paper presents the urban drainage study of two small urban catchments in the city of São Paulo, Brazil. São Paulo is a megacity with more than 11 million inhabitants, with enormous social, technical, economic, and environmental problems. Among them is the flooding of several areas during the rainy season. It can be observed that …

The Complexity of Urban Drainage Projects in Megacities: The Case of the Água Preta and Sumaré Catchments of the City of São Paulo, Brazil Leia mais »

The floods in the city of São Paulo, Brazil, are an historical trouble as a result of its urbanization process. The city has a total area of 1,521 km2, with 68% of urban area, where there are 1,000 km of underground streams, which represent 42% of the streams located in the urban area. Therefore, inundation …

Flood Zoning in Urban Planning and Runoff Control Leia mais »

Floods are natural events that cause various social and economic impacts. These events are originated from intense rainfall that exceeds soil infiltration capacity leading to major water runoff that surpasses the capacity of drainage systems. At highly urbanized basins, like the ones in São Paulo, the problem becomes even more complex since it involves land …

Real-Time Flood Forecast Modeling as a Planning Tool Leia mais »

Like other megacities São Paulo City has many infrastructure problems. One of them are the summer floods. This problem has been studied for years considering structural and non-structural measures. Many studies have shown that the investments required to reduce flooding throughout the city are very massive. This paper presents a methodology developed to the São …

Methodology to Support Decisions for Flooding Control Measures in the City of São Paulo, Brazil Leia mais »

São Paulo metropolitan region, like other megacities, has a high index of impervious areas which impacts its hydrology. In the summer, this region is devastated by heavy rainfall events. The main impact of this is the runoff volume produced leading to flash floods, mainly in small basins. Structural flood control measures can be costly, thus, …

Impermeability Control in Land Use for Reducing Investments in Structural Flood Control Measures—Case of Pirajuçara Watershed, São Paulo, Brazil Leia mais »