The paper presents research results on flood risk mitigation by the controlled flooding of a retention area on the middle reaches of the Elbe River. The retention area consists of six large polders and the floodplain of a tributary, the Havel, and is located near the Havel’s confluence with the Elbe River. The total retention volume of both the polders and the Havel floodplain amounts to approx...

Within the global framework of the climate change, according to most Regional Climate Models the maximum peak discharges in river will increase in importance and frequency. Therefore the people will have to face worst inundation conditions. In order to protect themselves from the increasing flood risk, the communities have to draw up suitable flood protection measures. The selection and the eva...

As the frequency of more intense storms increases and concerns grow regarding use dams levees, focus has shifted to natural infrastructure (NI) for flood mitigation. NI shown some success at small scales; however, little work been carried out large watershed scale during extreme events. Three measures (afforestation, water farming, control wetlands) were evaluated in Neuse River Basin eastern N...

It is well recognized that adaptive and flexible flood risk strategies are required to account for future uncertainties. Development of such strategies is, however, a challenge. Climate change alone is a significant complication, but, in addition, complexities exist trying to identify the most appropriate set of mitigation measures, or interventions. There are a range of economic and environmen...

Dams are very important for generating electricity and providing drinking water. However, they have major negative impacts on water quality, aquatic ecology, land, terrestrial wildlife, vegetation, air quality. Mitigation measures should be put in place to reduce these the environment. For example, impact sediment control drainage constructed. To chemical pollution, containers provided waste. W...

This study numerically predicts the failure scenario of a cracked concrete gravity dam through a push-over nonlinear analysis. The mixed-mode Linear Elastic Fracture Mechanics (LEFM) was employed using the extended finite element method (XFEM). The dam base was considered to be fully fixed without any foundation effects. The hydrostatic pressure on the dam's upstream face was increased incremen...

One popular Natural Flood Management (NFM) technique involves the construction of channel-spanning woody dams in low-order streams that maintain a clearance height above base flows. While extensive research has examined geomorphic effects natural wood accumulations, little been documented NFM dams, which are structurally distinct from accumulations and may produce different patterns erosion dep...

BACKGROUND Vietnam is one of the most disaster-prone countries in the world. The country suffers from many kinds of natural disasters, of which the most common and serious one is flooding. Long and heavy rainfall during the last days of October and the first week of November 2008 resulted in a devastating flood unseen for over three decades in the capital city of Hanoi. It caused a substantial ...