• Hydraulics
• Environmental Hydrology and Water Resources
• Erosion and Sediment Transport
• Fluvial Geomorphology
• Surface and Ground Water Modeling
Estimation of the sediment yield using hydrological assessment tool model: a case of Wadi Al-Arab Dam at the northern part of Jordan Nidal Adeeb Hadadin, Sania Ratib Al-Adwan Arabian Journal of Geosciences, 2020 Sedimentation represents a serious threat to the dam and reduces its useable water storage and its life span. Due to erosion and sedimentation problems, a dam gradually loses its ability to store water for the purposes for which it was built. The Soil and Water Assessment Tool model (SWAT) was utilized to estimate the sediment yield in Wadi Al-Arab dam at the northern part of Jordan. In this research, two sediment transport relationships were developed: one for the sediment yield as a function of surface runoff and another for the sediment yield as a function of the slope, area of the watershed, and water discharge by using a statistical regression analysis on a set of hydraulic variables. The results showed that the reservoir storage is reduced with an annual rate of 0.093 MCM, and the accumulated sediment occupies 15% of the total storage capacity during a period of 32 years. The model also identified the location of high sediment yield within the study area, which is located at the western part of the watershed. The result of this study was compared with those of other investigators and with the actual sediment data. The difference in sediment yield between this study and actual sediment deposition was about 7%. Based on the results, it was found that SWAT model could be used to predict catchment soil erosion in watershed and sediment yield trapped behind similar dams.
Variation in hydraulic geometry for stable versus incised streams in the Yazoo River basin – USA Nidal Hadadin International Journal of Sediment Research, 2017 The effects of basin hydrology on hydraulic geometry of channels variability for incised streams were investigated using available field data sets and models of watershed hydrology and channel hydraulics for the Yazoo River basin, USA. The study presents the hydraulic geometry relations of bankfull discharge, channel width, mean depth, cross-sectional area, longitudinal slope, unit stream power, and mean velocity at bankfull discharge as a function of drainage area using simple linear regression. The hydraulic geometry relations were developed for 61 streams, 20 of them are classified as channel evolution model (CEM) Types IV and V and 41 of them are CEM streams Types II and III. These relationships are invaluable to hydraulic and water resources engineers, hydrologists, and geomorphologists involved in stream restoration and protection. These relations can be used to assist in field identification of bankfull stage and stream dimension in un-gauged watersheds as well as estimation of the comparative stability of a stream channel. A set of hydraulic geometry relations are presented in this study, these empirical relations describe physical correlations for stable and incised channels. Cross-sectional area, which combines the effects of channel width and mean channel depth, was found to be highly responsive to changes in drainage area and bankfull discharge. Analyses of cross-sectional area, channel width, mean channel depth, and mean velocity in conjunction with changes in drainage area and bankfull discharge indicated that the channel width is much more responsive to changes in both drainage area and bankfull discharge than are mean channel depth or mean velocity.
Modeling of rainfall-runoff relationship in semi-arid watershed in the central region of Jordan Nidal Hadadin and Jordan Journal of Civil Engineering, 2016 As a result of quick progression in computer and information technologies, computer modeling has become a vital tool in watershed research and management practices. Stanford Watershed Model (SWM) is an integrated physically based Watershed model that can be used to simulate water flow stream/canal network and overland runoff, interflow and evaporation by considering the interaction between surface water and subsurface water. The objective of this study is to apply the SWM in order to estimate the rainfall-runoff relationship for Wadi Wala streamflow semi arid area with an average annual rainfall of about 300 mm/yr and a catchment area of 1800 km. SWM has been widely accepted as a tool to synthesize a continuous hydrograph of hourly or daily streamflow. Sensitivity analysis, as well as trial and error adjustment techniques were used for the optimization of the number of parameters of the model. Comparing estimated and measured surface runoff for Wala valley indicated that the model is considerably efficient in predicting the total annual surface runoff from rainfall for similar watersheds.
Rainwater harvesting in Jordan: a case of Royal Pavilion at Amman Airport Nidal Hadadin, Khaldoun Shatanawi, Radwan Al-Weshah Desalination and Water Treatment, 2014 Volumes of rainwater harvested on-site are estimated by short-term storage capacity by two methods: graphical method and analytical method. The first method considers the difference between demand and supply over a specified period of time. The second uses random events to determine analytically, the storage capacity required to guarantee the draft. The comparison between the two methods indicates that there are minor differences. Based on the volume of water harvested after applying these methods, run-off coefficient for impervious surface in arid and semi-arid area was estimated. New analytical approach for long-term storage capacity is utilized to estimate the detention pond capacity off-site for the local natural streams. To apply this method, it is necessary to estimate the overall mean storage capacity in which the soil conservation service method is utilized. This technique is confirmed with graphical method.
Evaluation of several techniques for estimating stormwater runoff in arid watersheds Nidal Hadadin Environmental Earth Sciences, 2013 Several traditional techniques have been used for estimating storm-water runoff from ungauged watersheds. Some of these techniques were applied to watersheds of Rashadia in south-eastern desert of Jordan. When engineers apply rainfall-runoff models for hydrologic design, there are difficulties in defining and quantifying peak discharges that are required to design different types of hydraulic structures. The lack of data presents major difficulties for rainfall-runoff modeling in arid regions. These regions have characteristically high rainfall intensity and consequent flash floods. The specific objectives of this study are: (1) apply synthetic hydrographs for estimating peak discharges from limited hydrological data. (2) Evaluate the reliability of six techniques to accurately estimate storm-water runoff; and, to evaluate the runoff that is required to design hydraulic structures such as bridges, culverts and dams. (3) Estimate the flood resulting from direct runoff after subtracting all the loses such as: the infiltration, interflow and evaporation. (4) Develop a simple regression relationship between peak flow discharges and catchment areas. The results show that there is uncertainty in determining the accuracy of storm-water volume, this is due to several methods were utilizing the estimation the hydrographs base time, but promising results in predicting the peak flow discharge.
Start-up of anaerobic ammonium oxidation (Anammox) from conventional return activated sludge in up-flow anaerobic sludge blanket (UASB) reactor for autotrophic nitrogen removal from wastewater Jordan Journal of Civil Engineering, 2012
Theoretical and analytical approaches for investigating the relations between sediment transport and channel shape World Academy of Science Engineering and Technology, 2010
The geological model and the groundwater aspects of the area surrounding the eastern shores of the Dea Sea (DS) - Jordan Wseas Transactions on Information Science and Applications, 2009
Development new sediment transport equation for flume 8th International Scientific Conference on Modern Management of Mine Producing Geology and Environmental Protection Sgem 2008, 2008
