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Showing 3 results for Supplementary Irrigation
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Volume 1, Issue 3 (11-2013)
Abstract
Mohadese Rahimpour, Mohamad Tajbakhsh, Hadi Memarian,
Volume 4, Issue 3 (12-2016)
Abstract
Water harvesting using runoff is one of the approaches that reduces risk factors in the country and leads to a stability and sustainability in agricultural activities of arid and semi-arid regions. This work aims to assess the potential of rock outcrops (more than 90% of rock fragment) for supplementary irrigation in the Zoshk-Abardeh watershed. Results showed that runoff volume extracted from rock outcrops with an area of 433 ha in only four month (June, July, August, and September) will be around 866000 m3, which would decrease the reliance on watershed groundwater resources and compensate a significant part of water deficiency in dry season. Ecosystem function of rainwater harvesting in the studied watershed was estimated to be 650$/ha, which can establish the economic justification of these techniques.
Engineer Ali Mirtaheri, Dr Seyed Mohamad Tajbakhsh, Dr Mohamad Sadegh Ghazanfari,
Volume 8, Issue 1 (6-2020)
Abstract
Most of the rainfall in arid and semi-arid regions, which becomes runoff immediately after rainfall, eventually evaporates and becomes inaccessible. Harvesting water from impermeable rock surfaces and storage in reservoirs or aquifer feeding is an effective way to prevent evaporation losses in these areas. The purpose of this study is to model the amount of runoff in sub-basins with impermeable surfaces in the Haft Bagh Alavi area of Kerman to estimate the volume of harvestable runoff in this area. Haft Bagh Alavi watershed is located 26 km from Kerman and has an area of 14923 hectares. About 18.3%, equivalent to 2732 hectares of the basin area has a rock mass level of more than 90%. HEC-HMS software has been used to model rainfall-runoff in the basin. The area curve number of soil, slope, and land use information was entered into the model. 30-year mean evapotranspiration data, with the 30-year mean of 10-minute precipitation data, were collected from the automatic station and used as input. The results showed that by harvesting only 10% of the total average annual cumulative runoff of four sub-basins, it is possible to collect 8.055 million cubic meters of water and provide water for supplementary irrigation of 16,110 hectares of gardens.
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