Assessing the Effect of Check Dams on Runoff Storage in the Haydari Watershed, Iran
2011
Amini, Ata | Roughani, Mohammad | Heydarian, Ahmad | Moraveg, Ahmad | Tabatabaie, Mahmod | Khalkhali, Ali | Hossaini, Majid | Emamie, Naiem
Recently, water and soil resource competition and environmental degradation due to inadequate management have been increased and pose difficult problems for resource managers. Particularly, the consequent trade-offs between economic, environmental, and social factors must be considered when implementing management policies. Numerous watershed practices currently being implemented for runoff control and water storage purposes have improved hydrologic conditions in watersheds and enhanced establishment of riparian vegetation. Assessment of management options proposed to meet the water and soil conservation is fundamental to improve the watershed management efficiency. Construction of check dams is an effective control measure for soil and water conservation. Check dams have been constructed on streams to trap soil and retain flood, and it promotes the deposition of sediment for farming. To evaluate watershed response to mechanical operations in order to increase water storage , this research conducted in Haydari watershed, Charmahal-o-bakhtiari, Iran. The watershed area is 112 km2 which has been subjected to enormous mechanical operations to prevent water and soil losses. The dimensions of constructed check dams and related reservoirs as well as their spatial distribution were recorded. The data were used to derive the volume of retained water and sediments. The results indicate that despite of inadequate execution and dispute about the location of structures, the use of check dams is an important mechanical practice for the runoff storage and percolation of runoff in Heydari watershed.
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