Search Results - subject:"Flood forecasting"

Predicting Monsoon Floods in Rivers Embedding Wavelet Transform, Genetic Algorithm and Neural Network

Sahay, Rajeev; Srivastava, Ayush - In: Water Resources Management 28 (2014) 2, pp. 301-317

Monsoon floods are recurring hazards in most countries of South-East Asia. In this paper, a wavelet transform-genetic algorithm-neural network model (WAGANN) is proposed for forecasting 1-day-ahead monsoon river flows which are difficult to model as they are characterized by irregularly spaced...

Persistent link: https://www.econbiz.de/10010794236

Wavelet Bootstrap Multiple Linear Regression Based Hybrid Modeling for Daily River Discharge Forecasting

Sehgal, Vinit; Tiwari, Mukesh; Chatterjee, Chandranath - In: Water Resources Management 28 (2014) 10, pp. 2793-2811

A new hybrid model, the wavelet–bootstrap–multiple linear regression (WBMLR) is proposed to explore the potential of wavelet analysis and bootstrap resampling techniques for daily discharge forecasting. The performance of the developed WBMLR model is also compared with five more models:...

Persistent link: https://www.econbiz.de/10010794354

Model for determining real-time optimal dam releases during flooding conditions

Ahmed, El-Said; Mays, Larry - In: Natural Hazards 65 (2013) 3, pp. 1849-1861

A methodology for evaluating real-time optimal reservoir releases under flooding conditions that minimizes flood damages for a river-reservoir system is described in this paper. The problem is formulated as a discrete-time optimal control problem in which reservoir releases are the control...

Persistent link: https://www.econbiz.de/10010846532

Variability of rainfall temporal patterns and its impacts on design flood estimation

Rahman, Ataur; Mahbub, Parvez; Rahman, Khondker; Gold … - University of Western Sydney; University of Central …; … - 2006

Design rainfall temporal pattern is an important input to the rainfall-based flood estimation methods. Although temporal patterns generally show a high degree of variability from storm to storm, an average temporal pattern is generally used in the Design Event Approach, the recommended...

Persistent link: https://www.econbiz.de/10009481906

Potentials and constraints of different types of soil moisture observations for flood simulations in headwater catchments

Bronstert, Axel; Creutzfeldt, Benjamin; Graeff, Thomas; … - In: Natural Hazards 60 (2012) 3, pp. 879-914

Flood generation in mountainous headwater catchments is governed by rainfall intensities, by the spatial distribution of rainfall and by the state of the catchment prior to the rainfall, e.g. by the spatial pattern of the soil moisture, groundwater conditions and possibly snow. The work...

Persistent link: https://www.econbiz.de/10010996769

The Fallibility of Flood Warning Chains: Can Europe’s Flood Warnings Be Effective?

Parker, D.; Priest, S. - In: Water Resources Management 26 (2012) 10, pp. 2927-2950

Taking a broad overview, this paper explores recent evidence on flood forecasting, warning communication and public … these deficiencies have on flood warning effectiveness and loss reduction. Europe-wide data on flood forecasting and warning … limiting warning impact. Flood forecasting, warning and warning response systems are inherently fallible and so it is doubtful …

Persistent link: https://www.econbiz.de/10010794388

Regionalisation of design rainfalls in Victoria Australia for design flood estimation by joint probability approach

Kader, Faruk; Brisbane; Rahman, Ataur - University of Western Sydney; University of Western Sydney; … - 2004

The currently adopted rainfall-based design flood estimation technique in Australia known as the Design Event Approach is widely criticised and currently being challenged by a more holistic approach known as the Joint Probability Approach to design flood estimation. In this new approach, the...

Persistent link: https://www.econbiz.de/10009482150

Dynamic routing modeling for flash flood forecast in river system

Liu, Wen-Cheng; Chen, Wei-Bo; Hsu, Ming-Hsi; Fu, Jin-Cheng - In: Natural Hazards 52 (2010) 3, pp. 519-537

A real-time flood-forecasting method coupled with the one-dimensional unsteady flow model was developed for the … developed is effective for flash flood forecasting and can be adopted for flood forecasting in complicated river systems …

Persistent link: https://www.econbiz.de/10010995643

Derivation of Probabilistic Thresholds of Spatially Distributed Rainfall for Flood Forecasting

Golian, Saeed; Saghafian, Bahram; Maknoon, Reza - In: Water Resources Management 24 (2010) 13, pp. 3547-3559

“Rainfall threshold” is considered as one of the evolving flood forecasting approaches. When the cumulative rainfall … on the extraction of rainfall threshold curves for flood forecasting, the rainfall assumed to be uniform in space whereas …

Persistent link: https://www.econbiz.de/10010998237

Real-time flood forecasting of the Tiber river in Rome

Calvo, Benedetto; Savi, Fabrizio - In: Natural Hazards 50 (2009) 3, pp. 461-477

An adaptive, conceptual model for real-time flood forecasting of the Tiber river in Rome is proposed. This model …

Persistent link: https://www.econbiz.de/10010996564