Results 221 to 230 of about 221,223 (264)

Regional flow-duration curves: reliability for ungauged basins

Advances in Water Resources, 2004
Abstract A flow-duration curve (FDC) illustrates the relationship between the frequency and magnitude of streamflow. Applications of FDC are of interest for many hydrological problems related to hydropower generation, river and reservoir sedimentation, water quality assessment, water-use assessment, water allocation and habitat suitability.
CASTELLARIN, ATTILIO, GALEATI G., BRANDIMARTE, LUIGIA, BRATH, ARMANDO, MONTANARI, ALBERTO   +4 more
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Uncertainty Analysis of Regional Flow Duration Curves

Journal of Water Resources Planning and Management, 2002
Flow duration curves (FDCs) are useful tools for many water resource development and management purposes. Many water resource projects are located at ungauged sites, however, for which FDCs are required but unavailable due to the lack of observed flow records.
Pao-Shan Yu, Tao-Chang Yang, Yu-Chi Wang
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A stochastic model of flow duration curves

Water Resources Research, 1993
The estimation of flow quantiles is a major focus of current hydrologic research. Probabilistic representations of a few individual quantiles, notably the annual flood and low flow, have been devised, and recently a few of the larger quantiles have been modeled.
David W. LeBoutillier, Peter R. Waylen
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The response of flow duration curves to afforestation

Journal of Hydrology, 2005
The hydrologic effect of replacing pasture or other short crops with trees is reasonably well understood on a mean annual basis. The impact on flow regime, as described by the annual flow duration curve (FDC) is less certain. A method to assess the impact of plantation establishment on FDCs was developed.
Patrick N.J. Lane, Alice E. Best, Klaus Hickel, Lu Zhang   +3 more
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Comparing Flow Duration Curves and Discharge Hydrographs to Assess Eco-flows

Water Resources Management, 2021
Although eco-flows (ecosurplus (ES) and ecodeficit (ED)) based on the flow duration curve (FDC) have been used to assess hydrologic alterations in recent years, they are defective, and their limitations have never been clarified. In this study, the causes of these limitations were analyzed, and the ES and ED on different time scales were redefined ...
Xiaoming Guo, Lukai Xu, Lei Su, Yu Deng, Chaohui Yang   +4 more
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Prediction of daily flow duration curves and streamflow for ungauged catchments using regional flow duration curves

Hydrological Sciences Journal, 2008
A method is presented to predict flow duration curves (FDCs) and streamflow for ungauged catchments in the Mid-Atlantic Region, USA.
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Prediction of flow duration curves in ungauged basins

2013
A wide variety of approaches have been adopted to quantify runoff variability, with differing degrees of emphasis on high flows (floods), low flows, seasonal variation of flows, and annual flows, and many of these are discussed in other chapters of this book.
CASTELLARIN, ATTILIO, G. Botter, D. A. Hughes, S. Liu, T. B. M. J. Ouarda, J. Parajka, D. Post, M. Sivapalan, C. Spence, A. Viglione, R. Vogel   +10 more
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Synthetic regional flow duration curve for southern Taiwan

Hydrological Processes, 1996
The primary purpose of this study is to develop the regional flow duration curves for southern Taiwan. To define homogeneous regions for developing regional flow duration curves, multivariate statistical analysis (principal component and cluster analysis) was applied to daily flow data from 34 stream-gauged stations in southern Taiwan.
Pao-Shan Yu, Tao-Chang Yang
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Prediction of flow duration curves for ungauged basins

Journal of Hydrology, 2017
Abstract This study presents novel models for prediction of flow Duration Curves (FDCs) at ungauged basins using artificial neural networks (ANN) and Gene Expression Programming (GEP) trained and tested using historical flow records from 171 unregulated and 89 regulated basins across North America. For the 89 regulated basins, FDCs were generated for
Maya Atieh, Graham Taylor, Ahmed M.A. Sattar, Bahram Gharabaghi   +3 more
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A generalized seasonal model for flow duration curve

Hydrological Processes, 2000
In this study a new method is developed to determine a flow duration curve (FDC) for a process in which stream flow is defined as a product of two variables, representing the periodic and the stochastic components, respectively. The cumulative frequency distribution is obtained via integration procedures and also given as an algorithm for discrete ...
H. Kerem Cigizoglu, Mehmetcik Bayazit
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