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Evaluation the Impacts of Low Head Structures on Runoff Maintenance and Soil Moisture (Case Study: Kardeh Dam Basin)
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Abstract: (14531 Views) |
| Ali Akbar Abbasi, Ali Bagherian Kalat, Elham Khoshbazm
Email: ak_abbasi@yahoo.com
Abstract
The water shortage in the world is one of the main problems that affect human life especially in arid and semi-arid area. Most area of the country is located within the arid and semi-arid. Rainfall in such areas is low with poor distribution that is causing droughts and water shortages. Catchments in mountainous areas produce runoff and plain areas in addition to direct rainfall accumulate main part of mountainous water. Because of the steep mountain catchments have different hydrological behavior, the main characteristics of mountainous areas is producing water. If store the runoff or provide a suitable platform for its infiltration, In addition to providing water for pasture improvement or recharging of subsurface flow and groundwater, helps to reduce flood plain areas located at downstream. This research that has been done at Goosh catchment at the upstream of Kardeh dam, Evaluated the Impacts of low head structures on runoff maintenance and soil moisture. Based on field measurements, earth dams had the greatest role in storing runoff. After more than ten years due to the construction of watershed structures in the study area and deposition of fine sediments with depth of 1.7 meters behind earthen dams, Which reduce the possibility of infiltration rate of stored water behind the structures. As a result, the major contribution of stored water has evaporation. |
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| Keywords: rain water harvesting, watershed Kardeh, storage of runoff, Low head structures |
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Full-Text [PDF 2548 kb]
(127 Downloads)
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Type of Study: Research |
Subject:
Special
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