نتایج جستجو برای: flood mitigation dams

تعداد نتایج: 62330  

2017

The employment of damage mitigation measures by individuals is an important component of integrated flood risk management. In order to promote efficient damage mitigation measures, accurate estimates of their damage mitigation potential are required. That is, for correctly assessing the damage mitigation measures’ effectiveness from survey data, one needs to control for sources of bias. A biase...

2008
Sammy Zahran Samuel D. Brody Wesley E. Highfield Arnold Vedlitz

A basic proposition of agency theory is that output-based performance incentives encourage greater effort. However, studies find that incentive schemes can distort effort if rewards for performance are discrete or nonlinear. The Federal Emergency Management Agency's (FEMA) Community Rating System (CRS) is a flood mitigation program with a nonlinear incentive design. Under this program, localiti...

Journal: :Computers, Environment and Urban Systems 2012
Ebenezer Danso-Amoako Miklas Scholz Nickolas Kalimeris Qinli Yang Junming Shao

This study aims to provide a rapid screening tool for assessment of sustainable flood retention basins (SFRBs) to predict corresponding dam failure risks. A rapid expert-based assessment method for dam failure of SFRB supported by an artificial neural network (ANN) model has been presented. Flood storage was assessed for 110 SFRB and the corresponding Dam Failure Riskwas evaluated for all dams ...

Among the structural and non-structural methods of flood control, rockfill dams are a kind of detention structures that increase travel time and reduce the maximum instantaneous flood discharge. Due to the rapid and automatic effect of these dams, flood reduction happens more quickly. In this research, the best arrangement of rockfill dams at Taleghan basin was determined based on the cost of r...

Journal: :Environmental science & technology 2013
Carolyn Kousky Sheila M Olmstead Margaret A Walls Molly Macauley

Green infrastructure approaches have attracted increased attention from local governments as a way to lower flood risk and provide an array of other environmental services. The peer-reviewed literature, however, offers few estimates of the economic impacts of such approaches at the watershed scale. We estimate the avoided flood damages and the costs of preventing development of floodplain parce...

Journal: :Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 2013

2005

A fundamental challenge in understanding the global nitrogen cycle is the quantification of denitrification on large heterogeneous landscapes. Because floodplains are important sites for denitrification and nitrogen retention, we developed a generalized floodplain biogeochemical model to determine whether dams and flood-control levees affect floodplain denitrification by altering floodplain inu...

Journal: :Environmental Health Perspectives 1997
S Joyce

Once a sign of modernization and growth, dams are often seen today as symbols of environmental and social devastation. Over 800,000 dams have been built worldwide to provide drinking water, flood control, hydropower, irrigation, navigation, and water storage. Dams do indeed provide these things,but at the cost of several adverse, unexpected effects: disruption of ecosystems, decline of fish sto...

Journal: :iau international journal of social sciences 2011
pooya alaedini mehrdad javaheripour elham houminfar

the frequency and impacts of floods have increased in iran in the past few decades. as flood events are in most instances associated with human activities, mitigating their impacts requires non-structural and community-based initiative alongside structural measures. in this connection, the concept of community resilience has been advanced in recent times, which attaches importance to interactio...

2016
Byron Tasseff Russell Bent Pascal Van Hentenryck

Globally, flooding is the most frequent among all natural disasters, commonly resulting in damage to infrastructure, economic catastrophe, and loss of life. Since the flow of water is influenced by the shape and height of topography, an effective mechanism for preventing and directing floods is to use structures that increase height, e.g., levees and sandbags. In this paper, we introduce the Op...

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