Water resources design has widely used the average return period as a concept to inform management and communication of the risk of experiencing an exceedance event within a planning horizon. Even though nonstationarity is often apparent, in practice hydrologic design often mistakenly assumes that the probability of exceedance, p, is constant from year to year which leads to an average return p...

On the variability of return periods of European winter precipitation extremes over the last five centuries A. Pauling and H. Paeth Institute of Geography, University of Bern, Hallerstrasse 12, 3012 Bern, Switzerland Meteorological Institute, University of Bonn, Auf dem Hügel 20, 53121 Bonn, Germany Received: 22 February 2006 – Accepted: 18 March 2006 – Published: 24 April 2006 Correspondence t...

A filtered Poisson process is proposed as a model for river flows. With the help of real-life data, parameters are estimated. Mathematical formulae derived in order to estimate various return periods river. An application two rivers shows that point estimates very close corresponding values computed by hydrologists, based on historical data. Moreover, modifying model, we can see potential effec...

Tropical cyclones in the vicinity of Hawaii have resulted in great property damage. An estimate of the return periods of tropical cyclone intensities is of particular interest to governments, public interest groups, and private sectors. A dimensionless quantity called relative intensity (RI) is used to combine all available information about the tropical cyclone characteristics at different pla...

Understanding watershed responses to extreme events is important for assessing potential impacts of floods, droughts, episodic pollution, and other external driving variables on watershed resources. In this study, we combine trend and frequency analyses with paired watershed techniques to evaluate the long-term highand low-flow data from Coweeta Hydrologic Laboratory in North Carolina, USA in a...

Received XXXX; accepted XXXX Abstract Series of observed flood intervals, defined as the time intervals between successive flood peaks over a threshold, were extracted directly from eleven approximately 100-year streamflow datasets from Queensland, Australia. A range of discharge thresholds were analysed that correspond to approximately 3.7 months to 6.3 year return periods. Flood interval hist...