List of Articles Drainage Network

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  1 - Relationship between fractal dimensions of stream and morphometric characteristics of basin for the soil conservation
  sepideh mofidi Abolfazl Moeini Ali Torkashvand Ebrahim Pazira Hassan Ahmadi
  10.30495/wsrcj.2022.19235
  Background and Aim: River behavior is affected by two categories of natural, and human factors. Natural factors such as floods, soil erosion, mass movement and human factors such as facility construction, land-use change, and sand removal from the bed, play a key role i More

  Background and Aim: River behavior is affected by two categories of natural, and human factors. Natural factors such as floods, soil erosion, mass movement and human factors such as facility construction, land-use change, and sand removal from the bed, play a key role in the behavior and intensification of river changes. The serious and irreparable dangers that may be posed by river movements and changes indicate the need to study its morphology in the study phase before any action is taken. The network of streams continuously changes its location based on time, environmental factors and human interventions. It is very important to study the stream changes to provide the should be omitted management solutions for the should be omitted soil conservation. One of the new methods in this regard is to use the should be omitted fractal geometry. The purpose of this study was to calculate the fractal dimensions of the stream and to investigate its relationship with the morphometric characteristics of the basinMethod: To do this, a should be added topographic map of the should be added basin in Firouzkouh, Tehran province was prepared. The map of the streams was prepared and the morphometric characteristics of the basin were determined by using the ARC GIS 10.3 software. Then, three fractal dimensions of the should be added drainage network (stream branch), drainage density, and basin area were calculated. Finally, the morphometric characteristics of the basin associated with the fractal dimensions were investigated by entering the data obtained from the calculations in the SPSS 18 and Curve Expert software Results: The results showed that the minimum and maximum fractal dimensions of the bifurcation ratio were 0.25 and 2.99, of should be omitted the drainage density was 0.19 and 2.34, and of should be omitted the area was 0.76 and 2.60. The fractal dimension of the should be added, the should be added dimension of drainage density, and the should be added fractal dimension of the should be added total area of the basin were 1.84, 0.71, and 1.46, respectively. The fractal dimension of the should be added ratio and the sub-basin area were inversely related with the determination coefficient of 0.90, and the fractal dimension of drainage density and the area and the fractal dimension of an should be added area with the sub-basin area was directly related with the determination coefficients of 0.88, and 0.87, respectively. The more elongated the basin and the lower the form, roundness, and elongation factors, the smaller the bifurcation dimension. the fractal dimension of the area is directly related to the compactness factor, elongation factor, form factor, bifurcation ratio, equivalent rectangle width, and equivalent rectangular length, and is inversely related to other variables. Based on the results, the more elongated the basin and the smaller the form, and elongation factors, the lower the area dimension. The fractal dimension of drainage density is directly associated with the circularity factor, compactness factor, elongation factor, form factor, area ratio, bifurcation ratio, equivalent rectangle width and equivalent rectangular length, and is inversely associated with other variables. Therefore, as the basin becomes more circular, the fractal dimension of the drainage density is increased. Therefore, the fractal dimension of drainage density is increased then as the basin becomes more roundedConclusion: According to the coefficient of explanation of the obtained models for the relationship between fractal dimensions, and morphometric properties, the studied fractal dimensions can be easily calculated and analyzed using morphometric properties. Due to the importance of stream characteristics in the management of watersheds in terms of flood, erosion, and soil conservation, the fractal models can be used to make quick and accurate decisions for the should be omitted management. Finally, considering that the use of fractal geometry is a new method in studying the characteristics of waterway networks, it is suggested that basins be analyzed fractally in different regions with different morphometric conditions. Manuscript profile
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  2 - Evaluation of Hydrological Softwares in Physiographic Parameters Extraction of Watershed
  Somayeh Soltani-Gerdefaramarzi Morteza Gheisouri Aref Saberi Mohsen Ghasemi
  10.22034/jest.2018.19697.2856
  Background and Objective: Today, many analysis of hydrological studies are applicable using ArcGIS, as a valuable tool for engineering analyzes. Determination of the geometry of the watershed and stream network extraction and analysis of physiographic parameters for mor More

  Background and Objective: Today, many analysis of hydrological studies are applicable using ArcGIS, as a valuable tool for engineering analyzes. Determination of the geometry of the watershed and stream network extraction and analysis of physiographic parameters for morphometric analysis, is the most important step for hydrological applications. Method: Using DEM with 10×10 meter pixel size of Sarbaz watershed, was extracted physiographic parameters such as environment, area, branching ratio and drainage density using software ARCSWAT, HEC-GEO HMS, WMS and ARC HYDRO and was compared with watershed border area. Findings: The results of SPSS showed that they don’t have statistically significant differences in the level of 95% between operations of software. So, the results of Duncan test represented that all softwares are placed in a group. Output parameters of the software in numerical terms was very close. Depending on the expert opinion and ease of use of any of the software can be used to derive physical parameters of watershed. Although the border area of extracted with ARCSWAT, HEC-GEO HMS and ARC HYDRO was closer than WMS with the truth visually. Discussion and Conclusion: Because of pre-processing process required the preparation of DEM in WMS software and the difficulty with this software compared to other software, WMS software less frequently used in hydrological studies. But in hydrological studies such as flood control, sediment and erosion due to consideration of more ranks of stream the WMS software could be more appropriate. Manuscript profile
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  3 - Use of morphometric indices in drainage network changes (Indicators in the Kordkanlo Basin)
  Mohammad Javanbakht مهدی رضا پورسلطانی ناصر خلقی
  10.30495/ijes.2020.674672
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  4 - Assessment of Changes in Groundwater Quality and Quantity of Mianab Shushtar Plain after the Construction of Irrigation and Drainage Network
  mehrdad kakolaki Hossein Eslami
  Irrigation and drainage networks construction are affecting the quality and quantity of groundwater. This study aims to evaluate the quantitative and qualitative changes of Mianab Shushtar plain aquifer after the construction of irrigation and drainage network in 2008. More

  Irrigation and drainage networks construction are affecting the quality and quantity of groundwater. This study aims to evaluate the quantitative and qualitative changes of Mianab Shushtar plain aquifer after the construction of irrigation and drainage network in 2008. First by checking annual hydrograph of the plain, the changes of ground water storage volume during years of before and after the implementation of irrigation and drainage network were evaluated. During 2005-06 to 2008-09 in the third year, 6.4 million cubic meters of underground water reservoir storage volume decreased and from 2008-09 to 2013-14, 9.07 million cubic meters of underground water storage volume has been added. With comparison in the same period, it was found that change in the reservoir is largely influenced by the amount of annual precipitation. Then calculate the groundwater balance, factors affecting the reservoir volume changes were studied. The results showed that 2008-09 and 2009-10 balance was -3.59 and 5.44. Most important factor in changes in groundwater reservoir was the amount of annual rainfall and operation of the network had not a significant impact in increasing the groundwater level. In the following to investigate qualitative changes of underground water sources, the Wilcox diagram for two years before and after the construction of irrigation and drainage network was used. The results showed that due to high groundwater level before the network operation, more sampling points was in class of too salty and unusable for agriculture. Therefore network operation had not significant effect in the quality of groundwater resources. Manuscript profile
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  5 - Evaluation of operation of the first and second units of Dariun Shushtar irrigation and drainage network by classical method
  Mohammadreza Gohari Behbahani Mohammad hossein purmohammadi
  In order to determine the strengths and weaknesses of the management of operation and maintenance of irrigation and drainage networks of Daryun 1 and 2, the mentioned network was examined using the classical evaluation method. For evaluation in the model, the indicators More

  In order to determine the strengths and weaknesses of the management of operation and maintenance of irrigation and drainage networks of Daryun 1 and 2, the mentioned network was examined using the classical evaluation method. For evaluation in the model, the indicators were divided into five windows: technical, service-management, environmental, social and economic. 66 required indicators of the model were identified. To weigh the indicators, a specialized questionnaire of pairwise comparisons of the index was designed and provided to the experts.According to the results of the questionnaires, 11 matrices were prepared for each section and then a matrix was prepared for each group. The internal numbers of the mentioned matrix were obtained from the geometric weight average of each 11 matrices.Finally, the weight of window indicator indices was calculated by special vector calculation method by Maple software, then the numerical value of different window indices was calculated using SAW model.Based on the results obtained from the model calculations, the environmental window with a score of 0.956 is in the first place and its evaluation is good. The evaluation of the network in social, service-managerial, technical fields with scores of 0.864, 0.853, 0.827 in the next categories, respectively It is located and evaluated as average and the network has the lowest rank in economic fields with a score of 0.768. In general, it can be said that the performance of Dariun irrigation and drainage network with a score of 0.853 is generally average. Manuscript profile