Abstract: Since hydrologic time series in general, and stream‐flow series, in particular, are dependent and not normally distributed, use of the classical autoregressive and moving average (ARMA) models to represent such series ...

Abstract: The estimation of return periods of hydrological events and the corresponding risks of failure of hydraulic structures that are associated with such events are important aspects in many water resources studies. For simple ...

Abstract: A mathematical formulation to estimate return periods and risks of failure of complex hydrologic events such as those arising from dependent floods and droughts have been examined in the first part of this paper. Specifically, ...

Abstract: Various parametric and nonparametric models have been suggested in literature for stochastic generation of seasonal streamflows. State-of-the-art nonparametric models are reviewed herein and their drawbacks identified. We ...

Abstract: Current practice using probabilistic methods applied for designing hydraulic structures generally assume that extreme events are stationary. However, many studies in the past decades have shown that hydrological records ...

Abstract: The concepts and methods for planning and design of hydraulic structures subject to hydrologic extreme events that arise from nonstationary conditions have emerged in the last few years. The traditional approaches such as ...

Abstract: Estimating design quantiles for extreme floods in river basins under nonstationary conditions is an emerging field. Nonstationarities could arise from a variety of human and natural factors such as urbanization and climate ...

Abstract: Statistical techniques have been developed for assessing structures to confront extreme events such as floods. Among them are probability distribution functions (PDFs). For example, the waiting time of the first flood ...

Abstract: Significant advances have been made in understanding the importance of the factors involved in reservoir sedimentation. However, predicting the accumulation of sediment in a reservoir is still a complex problem. In estimating ...

Abstract: Disaggregation models are widely accepted tools for generating synthetic hydrologic time series. Attributes and limitations of such models have been reviewed and discussed by several researchers and practitioners. One ...