Abstract Coupled 1D–2D hydrodynamic models are widely utilized in flood hazard mapping. Previous studies adopted conceptual hydrological or 1D to evaluate the impact of drainage density on river flow. However, affects not only flow, but also flooded area and location. Therefore, this work adopts model SOBEK investigate The uncertainty mapping is assessed by a designed case real case, Yanshuixi ...

Rainfall runoff modeling is one of the most complex hydrological due to involvement different watershed physical parameters. It essential for analysis response towards received precipitation under influence variables. As it a replica response, Rainfall-Runoff evaluate general characteristics total surface at catchment’s outlet. The main objective this study was prediction rainfall using Hydrolo...

Sequences with low aperiodic autocorrelation and crosscorrelation are used in communications remote sensing. Golay Shapiro independently devised a recursive construction that produces families of complementary pairs binary sequences. In the simplest case, Rudin–Shapiro sequences, general it what we call Golay–Rudin–Shapiro Calculations by Littlewood show sequences have mean square autocorrelati...

A stormwater runoff model based on the Soil Conservation Service (SCS) method and a finite-volume based water quality model have been developed to investigate the use of Simulink for use in teaching and research. Simulink, a MATLAB extension, is a graphically based model development environment for system modeling and simulation. Widely used for mechanical and electrical systems, Simulink has h...

Few studies identify potential hazards affecting canyoning. This activity has an increasing number of practitioners, and hence, a greater people are affected by natural hazards. Mountain rivers located in places subject to several hydrological hazards; the risks mostly connected with floods produced intense storms or dam operation, but changes factors may alter usual basin behavior given even m...

In order to investigate the influence of different design rainfall peaks on urban flooding characteristics based MIKE hydrodynamic model, inundation process scenarios were extrapolated for recurrence periods and three single- double-peak types in Zhoukou city as an example, equivalent values total area compared analysed. The results show that bimodal has a higher risk than unimodal same ephemer...

Dissolved oxygen (DO) is considered as one of the most important aspect of aquaculture. It is needed by fish to respire and perform metabolic activities. Thus low levels of dissolved oxygen are often linked to fish kill incidents. On the other hand, optimum levels can result to good growth, thus result to high production yield. To increase pond production it is necessary to control dissolved ox...

Natural groundwater recharge is inherently difficult to quantify and predict, largely because it comprises a series of processes that are spatially distributed and temporally variable. Infiltration ponds used for managed aquifer recharge (MAR) provide an opportunity to quantify recharge processes across multiple scales under semi-controlled conditions. We instrumented a 3-ha MAR infiltration po...

Background: Yazd waste stabilization pond facilities consist of three stabilization pond systems, module 1, module 2 and module 3 that AWSP module 1 has started its operation. The existing facilities have had several problems in their operation. The objectives of this research were to evaluate the performance of stabilization ponds in wastewater treatment of the city of Yazd, due to several pro...

studying risk and frequency analysis of flood is done in order to design structures located in floody lands. in hydrological and water resources engineering projects, first of all, we should determine frequency of this phenomenon- their return period. in this research, the method of planning, the cumulative freguency curve is explained and probability and return period and errors concerning sma...