In the context of global urbanization, urban flood risk in many cities has become a serious environmental issue, threatening the health of residents and the environment. A number of hydrological studies have linked urban flooding issues closely to the spectrum of spatial patterns of urbanization, but relatively little attention has been given to small-scale catchments within the realm of urban ...

in this paper trends of precipitation and stream flow are analyzed in the atrak river basin in the north khorasan province. normal score linear regression, mann-kendall, and seasonal kendall trend tests were adopted. three precipitation variables and two stream flow variables including total precipitation, maximum daily precipitation, and number of rainy days, mean discharge and peak discharge ...

Reconstructions of the most severe historic flood events contribute to improved quantification design discharges corresponding large return periods. Reducing uncertainty has a great significance in constructing proper defences protect hinterland from future flooding. However, reconstructions peak such are generally associated with uncertainties, which arise accuracy topography, hydraulic roughn...

Accurate estimation of input parameters is essential to ensure the accuracy and reliability of hydrologic and water quality modelling. Calibration is an approach to obtain accurate input parameters for comparing observed and simulated results. However, the calibration approach is limited as it is only applicable to catchments where monitoring data is available. Therefore, methodology to estimat...

Peters, E., 2003. Propagation of drought through groundwater systems Illustrated in the Pang (UK) and Upper-Guadiana (ES) catchments. Ph.D. thesis, Wageningen University, The Netherlands. 203 pp. The transformation of droughts as a result of the propagation through groundwater systems is examined by comparing droughts in time series of groundwater recharge, levels and discharge. The groundwater...

This paper combines discrete wavelet transform (DWT) with an artificial intelligence algorithm in order to develop a new unsupervised method for fast detecting, localizing and classifying flood events in real stage-discharge time series. The proposed method does not require any a priori information such as catchment characteristics or alert flood thresholds; moreover, the simplicity of the meth...

This paper seeks to emphasize the flow variability in the Calnistea catchment by analyzing the local physiographic factors. The research has shown that the amount of precipitation that falls to the ground is low, the rocks in the region are soft, but highly permeable, gradients are gentle in most of the territory and vegetal cover is sparse and therefore cannot hold important amounts of water. ...

Evaluation of Extreme Scenarios Climate Change on Discharge the Shahid Rajaei Dam Catchment under HBV-light Model