Suitability of MUSLT for storm sediment yield prediction in Chehelgazi watershed, Iran

The Chehelgazi watershed of Gheshlagh Dam in western Iran was selected to check the capability of the MUSLT (Theoretical Modified Universal Soil Loss Equation) model for estimating sediment yield during storms. The efficiency of MUSLT for sediment yield prediction was assessed using observed sedimen...

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Bibliographic Details
Published in:Hydrological sciences journal 2013-05, Vol.58 (4), p.892-897
Main Authors: Sadeghi, S.H.R, Gholami, L, Khaledi Darvishan, A. V
Format: Article
Language:English
Subjects:
Barrage de Gheshlagh
bassin versant du Chehelgazi
Chehelgazi watershed
Earth sciences
Earth, ocean, space
Exact sciences and technology
Gheshlagh Dam
Hydrology
Hydrology. Hydrogeology
Iran
Marine and continental quaternary
Modified Universal Soil Loss Equation
MUSLT
prediction
production de sédiments
regression analysis
sediment yield
sediments
storms
Surficial geology
Water resources
watersheds
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Summary:The Chehelgazi watershed of Gheshlagh Dam in western Iran was selected to check the capability of the MUSLT (Theoretical Modified Universal Soil Loss Equation) model for estimating sediment yield during storms. The efficiency of MUSLT for sediment yield prediction was assessed using observed sediment data recorded for 11 storm events between October 2006 and April 2007. The results showed that MUSLT overestimated sediment yield with a high coefficient of determination (R ² = 0.636 and p < 0.05), and it was then calibrated by examining regression models. The developed calibrated model (C-MUSLT) performed well, with a coefficient of determination of 0.739 (p < 0.05) and relative estimation and verification errors of 49.36 and 25.18%, respectively. The results of comparison between observed and estimated values, obtained by applying the calibrated model, confirmed that the difference was significant with a t value of 1.453 (p = 0.05). Citation Sadeghi, S.H.R., Gholami, L., and Khaledi Darvishan, A.V., 2013. Suitability of MUSLT for storm sediment yield prediction in Chehelgazi watershed, Iran. Hydrological Sciences Journal, 58 (4), 892–897.
ISSN:2150-3435
0262-6667
2150-3435
DOI:10.1080/02626667.2013.782406