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Showing 3 results for Groundwater Resources
Engineer Hamid Moslemi, Dr Ali Jan Abkar, Engineer Saied Choopani,
Volume 3, Issue 2 (9-2015)
Abstract
In undeveloped and less developed countries of arid zones, the easiest way for water supply is withdrawal of groundwater. The negative perception of this method of water discharge is clear. Floodwater Spreading is one of the water resources management strategies in arid and semi-arid zones that has positive impacts on groundwater resources. The aim of this research is to demonstrate the impact of floodwater spreading on quantity of groundwater in Hashtbandi Plain, minab, Hormozgan province, Iran. Annual changes of water level were determined by reviewing water level of monthly data (2003-2014) of five observation wells. Though the floodwater spreading may not stop the aquifer drop, it has reduced the drop intensity of groundwater level. Results show that the least drop is in observation wells 25 that is near floodwater spreading. The results have shown that before implementing the water spreading project, fluctuation of groundwater levels were proportional to the utilization of groundwater resources, showing a declining rate. After implementing the project, a turning point on groundwater level was observed. However, in the years 2011-2012 due to drought and lack of water filling utilization plan and increased ground water usage, water level has decreased sharply.
Utilization, Flood water spreading, Hashtbandi plain, Groundwater resources.
Fatemeh Poursalehi, Hadighe Mohmmadi, Abolfazl Akbarpour, Reza Hashemi,
Volume 3, Issue 4 (3-2016)
Abstract
Recently in Iran, with regard to the rising trend of population growth rate and water demand, the volume of groundwater and surface water resources have faced with significant reduction. One of the ways to prevent from reduction of resources and to protect them is the management of water consumption especially in the urban sector. This study aimed to control the Birjand water consumption using systems thinking and the Vensim software. In this model at first, available per capita during 2008 to 2013 was simulated and then was proceeded to predict urban water per capita by 2042. Then per capita obtained based on the definition of consumption control policy that consider the parameters leakage reduction, increased use of components of consumption reducer in the household sector and public in the city, reduced bath time, increased price of water, reduction of the holidays and separation of water supply network of green spaces from the urban water supply network. The simulation results was compared with the existing per capita in Birjand. The results indicated that with control consumption, urban water per capita was decreased by 29.11% as compared with the usual conditions of the region. It consequently caused a reduction of the volume of water abstracted from groundwater resources due to reducing the volume of water entering the municipal sector.
Saeed Salehian, Rahmatollah Monshizadeh,
Volume 5, Issue 4 (2-2018)
Abstract
Abstract
Zayandeh-rud Basin is one of the most sensitive basins in Iran, politically, socially and economically. In the last two decades, the Zayandeh-rud basin has suffered from water stress, with about three-fifths of the length of the river in the middle and lower parts facing instability of water resources which have made those sections of the river seasonal. Due to the river water drying, water allocation to agricultural sector has been difficult, as water has flowed in the river only 5 times in the last decade, each time for few month. The closed condition and generative property of the Zayandeh-rud basin is such that the rate of exploitation of groundwater affects the occurrence or intensification of water instability in the basin. In this research, studied groundwater resources (Qanat, well) and springs in Zayandeh-rud basin are studied and compared during 2006 and 2011, two years in which a census was held. The results of the study show that after water resource instability, farmers tried to compensate for water reduction through well drilling and underground water utilization in order to continue their activities. This can be seen in the increase in the number of wells from the middle parts of the basin to the end of the river. In 10 years (2001-2011), about 9,000 wells were drilled to compensate for lack of water in the Zayandeh-rud basin and during this time, the average groundwater table level has fallen by an average of 5 meters. In addition, during this period, the qanats in Zayandeh-rud basin have either dried or showed reduced output. Similarly, the number of springs reduced due to climatic causes. Increased exploitation of underground aquifers has exacerbated the unstable condition of water and drought in the basin.
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