one of the most appropriate approaches for flood forecasting is using peak discharge data of hydrometric stations in each region. however, lack of such stations or short duration of data in most parts of the country, make it necessary to use some alternative methods in order to estimate the flood discharge properly. one of these approaches is regional flood analysis method that in a region usin...

reliable estimates of river stream fl ow and fl ood zoning maps are needed for water resourcesmanagement such as fl ood mitigation, water supply, dam construction and irrigation. flood zoning needsaccurate data and is one of the non-structural fl ood management methods. this paper describes theapplication of hec-ras and gis model to determine fl oodplains maps for the part of sardabrud rivertha...

Development of rural areas in rivers margins and flood plains, without understanding and attention to the dynamical and hydrological conditions and upstream areas of the rivers will cause to increase flood risk and loss of life and financial. Flood zoning has many applications, in floodplain management. For management of the three major branches of the Halilrood River, Rabor, Roodar and Javaran...

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...