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Journal Extension and Development of  Watershed Managment
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Journal Extension and Development of  Watershed Managment

Extension and Development of  Watershed Managment

The latest Published Issue
 Volume8،Number28 ،Successive28
 
1
The Relationship between Physiographic Characteristics of Watershed with Runoff and Sediment Production­ (Case Study: Selected Watersheds of Razavi Khorasan Province)
( 123 Visit ) ( 48 Download )  Abstract And Keywords
Publication Information : Volume 8 - Number 28 - Successive Number 28
Auhtors :
Abstract : Sediment and runoff production depend on different factors and the recognition of effective factors helps significantly the issue of watershed management. The aim of this research is determination of the relation between sediment-runoff production and physiographic characteristics in 26 selected catchments in Razavi Khorasan. In this regard, after determining the catchments’ boarders, 13 physiographic characteristics, were calculated using ArcGIS9.3 software. A common hydrological data period of 20 years was considered from 1986 to 2006. Then the stations with missing data were recompleted using normal ratio method. In order to determine the correlation between physiographic characteristics and sediment-runoff factors, their correlation coefficients were obtained and in order to evaluate the relationships, the stepwise multiple regression was used using SPSS22 software and the selected models presented. Another aim of this research was to use cluster analysis as a tool to determine homogenous catchments, so that with classification, the catchments heterogeneity causing factor is determined. According to the correlation results, the most relevant characteristics in sediment production were determined as elevation, slope, main channel length, and drainage density and in runoff production were determined as shape and form factor, circularity ratio, elongation ratio and the diameter of the circle level. According to the results of the regression, the most effective characteristic in sediment production was the drainage density and in runoff production determined including the form factor, elongation ratio and shape factor, respectively. Cluster analysis was also done in 4 distinct steps based on physiographic characteristics, runoff indices, sediment indices and all the above mentioned factors. The results from cluster analysis in mentioned methods showed that using different input factors, different classification is obtained for studied catchments.
Area of Expertise : Cluster Analysis, Correlation, Multiple Regression, Razavi-Khorasan, Sediment and Runoff Production, Watershed Physiography.

2
The Effects of Geological Formations on Quality Groundwater with Application Boolean Logic Case study: Emamzadeh Jafar plain
( 134 Visit ) ( 33 Download )  Abstract And Keywords
Publication Information : Volume 8 - Number 28 - Successive Number 28
Auhtors :
Abstract : In this study, the quality of groundwater resources and their correlation with geology formation was considered. For this purpose, using the geological map of the area and geological formation were extracted. Then the qualitative data of 40 operation well and piezometer, to determine the water brigade was entered to the software chemistry. The following formations according to the type of production and the effects of quality, were classified; In the next step, buffers in intervals of 1, 3, 5, 7 and 10 kilometers was created around wells and layers were cut with geological maps. The results obtained using the t-test showed that at 95%, at 1, 3, 5 and 7 kilometers of wells, The impact dissolution of formation on operation wells, is significant but at a distance of 10 kilometers and with increasing distance, this effect was less and significant effect there is not in this respect, But their total impact of non-Quaternary on the wells increases. The results of the Boolean logic also showed that the Qt2 Formation has the most expansion in the proximity of wells, including alluvial fans and young alluvial sediments and are the main aquifer feeding site. But as the distance from the wells increases, the impact of non-Quaternary formations, such as Asmari Lime and the Gachsaran Group Formations, which have the potential to produce carbonate and chlorite types, increases.
Area of Expertise : Aquifer, Quaternary Formation, Carbonate type, Geological Map.

3
A review on the conjunctive management of ground and surface water resources with emphasis on application optimization models
( 127 Visit ) ( 24 Download )  Abstract And Keywords
Publication Information : Volume 8 - Number 28 - Successive Number 28
Auhtors :
Abstract : Uneven spatial and temporal distribution of water and population growth in the world, especially in Iran in recent decades have caused problems in providing required water resources. In this regard, knowledge of management procedures and conjunctive utilization of ground and surface water resources as one of the important aspects of integrated management of water resources and their performance in various crisis management programs, water resources conservation and watersheds integrated management seems essential. Accordingly, the present study was conducted to provide a comprehensive information of past and recent studies about the mathematical models and evaluate their efficiency in integrated management of water resources, and overall review of each model expansion, advantages and limitations. Results showed that the integrated management is one of the new and efficient strategies in recent decades. Application of optimization and simulation techniques is a powerful and useful method in determination of management strategies in development of conjunctive optimum utilization of ground and surface water resources. In this regard, MODFLOW model in groundwater flow simulation and MT3DMS model in modeling of groundwater pollution were the most used models and GMS was used as a powerful, general, comprehensive and user-friendly model. Also the literature review on the evaluation of optimization algorithms in solving problems of water resources management showed that evolutionary algorithms with various degrees of complexity are capable of effective solving complex multi-restriction optimization problems for optimum utilization of water resources, planning and sustainable development in the future. In general the provided information in this study can be applied in future planning for sustainable development of water resources. 
Area of Expertise : Water Rresources Management, Meta Heuristic Algorithm, Classic Algorithm, Simulation

4
Analysing the Master Recession Curve of daily river flow in Nirchai River, Ardabil Province
( 124 Visit ) ( 30 Download )  Abstract And Keywords
Publication Information : Volume 8 - Number 28 - Successive Number 28
Auhtors :
Abstract : Analysis of river flow master recession curve is a way to assess the occurrence of hydrological drought. The purpose of this study was to inverstigate the master recession curve preparation of daily flow discharge. The master recession curve represents the nature of flow discharge, flow contribution sources and flow recission through the river. The shape of master recession curve used to analyse the hydrologic regime, watershed response and groundwater contribution in river flow discharge. The daily flow river of Nirchai watershed have been used in this study through a 36-year of recorded data. The MRCs in different regression equations (Linear, Exponential, Logharithmic, and Multinominal types) were extracted using a Visual Basic program (Posacev 2006) in excel environment, The constant coefficients and curve slope were defined and then, the coefficient of determination of different MRCs were calculated. Based on the results, the best MRC regression were selected (R2=0.91). The curve slope and constant values were estimated to be -0.07 and 0.443, respectively. These coefficients and indicates and its comparisons in different rivers can be used to investigate the hydrologic regime of the watersheds in different conditions.
Area of Expertise : Recession intensity, Flow contribution, Macro program, Hydrological drought, Recessionanalysis

5
Runoff simulation and investigation the effect of land use changes on surface water quantity using remote sensing data and Hec-Hms model (Case study: Halil Rud basin)
( 119 Visit ) ( 40 Download )  Abstract And Keywords
Publication Information : Volume 8 - Number 28 - Successive Number 28
Auhtors :
Abstract : Runoff evaluation in ungauged basins, like most of basins in Iran, is imperative for   sustainable management of water resources. Changes in land uses were related to different hydrological responses. This paper discusses the hydrological impacts of land use changes on the Halil-Rud Basin during the past two decades. Firstly, the land use map of the Halil Rud basin was prepared using Landsat satellite images in seven classes. Results reveal that from 1993 to 2013, a 1.99% increase in arid land is the strongest change in land use. By integrating the land use map and the soil map of the area, the curve number map of the basin was prepared. In order to ensure the accuracy of the curve number map, the flood hydrograph of the mentioned years was determined using the precipitation-runoff model of HEC-HMS and compared with observed hydrographs. The accuracy of 85% of the results showed that it can be reliable according to the exactness and precision of the curve number calculated by GIS and RS data in basins with limited or lake of data. The comparison of the flood hydrograph from the precipitation-runoff model from a specific precipitation (1993) showed that during the years 1993 to 2013, the peak flood discharge was about 106.1m3/s and the runoff volume increased about 7.5 million cubic meters. The results of this study indicate that the continuation of the degradation process in land use of the area towards the arid state will lead to decreased infiltration, with a degradation of maximum soil water contents, less winter recharge rates to aquifers, and increased run off and debated risks of floods.
Area of Expertise : land use, remote sensing data, precipitation-runoff model HEC-HMS, curve number map,

6
Investigating the Long-Term Changes in the Quality and Quantity of Groundwater Resources (Case Study: Delfan Plain)
( 113 Visit ) ( 77 Download )  Abstract And Keywords
Publication Information : Volume 8 - Number 28 - Successive Number 28
Auhtors :
Abstract : The increasing use of groundwater resources as the most important sources of water supply in arid and semi-arid regions has led to quantitative and qualitative problems of these resources. Therefore, maintaining and monitoring the quantity and quality of groundwater resources is one of the strategies for proper management of water resources in these areas. In this research, the process of quantitative and qualitative changes in the groundwater resources of Delfan plain is studied. For this purpose, 32 year deep well data in the plain including: Ca, Mg, Na, EC, SAR, HCo3, SO4, TDS, TH, Cl and K, as well as information about 12 piezometric wells for Years 1381-1395. Non-parametric Mann-Kendall test was used to study the process of time series changes in qualitative parameters. The results of analysis of this test showed that the changes in SAR and TH parameters were significant at 95% confidence level and in general, the anion sources of the plain had a decreasing trend while the cations of these sources had an incremental trend. Investigating the trend of groundwater level changes in the plain showed that the water balance of the resources decreased during the statistical period, which is in the Peymmetric wells of Sikond at 99% level, and in the wormhole, Azizabad and Lazar wells at 95% Has been.
Area of Expertise : Groundwater, Changing Procedure, Man-kendall, Delfan.

7
Evaluation of Groundwater Hydro-geochemical Characteristics in Basht Plain Aquifer and its Suitability using Qualitative Indicators
( 102 Visit ) ( 33 Download )  Abstract And Keywords
Publication Information : Volume 8 - Number 28 - Successive Number 28
Auhtors :
Abstract : In this research, to evaluate the groundwater resource Hydro-geochemical Characteristics in Basht Plain aquifer, Analytical results of 10 groundwater samples in dry and wet periods are used. One of the main factors that deteriorate the quality of groundwater is local geology which comprises mostly sedimentary rocks and in particular evaporates. To estimate of water quality, Hydro-geochemical diagrams, Geological Investigations, Ionic exchange, and Saturation Index studied. The type and facies of water in study area is Ca2+–HCO3- and Ca2+ – SO42-. The results of calculated saturation index show that the saturation index for carbonate minerals is positive and for sulfate minerals is negative. Reverse and normal ion exchange is one of the chemical processes controlling the chemical composition of groundwater. Based on the results, the water quality is controlled by flow paths and reservoir lithology. The GWQI map of ground water in aquifer shows that 91.3 and 8.7 percentage of ground water resources in this area are in good and bad category.
Area of Expertise : Basht Plain, geochemical Characteristics, Quality, Saturation Index, Water resources.

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