An Event-Based Sediment Yield and Runoff Modeling Using Soil Moisture Balance/Budgeting (SMB) Method

Sushindra Kumar Gupta (), Jaivir Tyagi, Gunwant Sharma, A. S. Jethoo and P. K. Singh
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Sushindra Kumar Gupta: Malaviya National Institute of Technology
Jaivir Tyagi: National Institute of Hydrology
Gunwant Sharma: Malaviya National Institute of Technology
A. S. Jethoo: Malaviya National Institute of Technology
P. K. Singh: National Institute of Hydrology

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2019, vol. 33, issue 11, No 4, 3741 pages

Abstract: Abstract The Soil Conservation Service Curve Number (SCS-CN) method is frequently used for the estimation of direct surface runoff depth from the small watersheds. Coupling the SCS-CN method with the Soil Moisture Balance (SMB) method, new simple 2-parameters rainfall-runoff model and 3-parametrs rainfall-sediment yield models are derived for computation of runoff and sediment yield respectively. The proposed runoff (R2) and sediment yield (S2) models have been tested on a large set of rainfall-runoff and sediment yield data (98 storm events) obtained from twelve watersheds from different land use/land cover, soil and climatic conditions. The improved runoff (R2) and sediment yield (S2) models show superior results as compared to the existing Mishra et al. (S1) and original SCS-CN (R1) models. The results and analysis justify the use of the proposed models for field applications.

Keywords: Sediment yield model; Rainfall-runoff model; SMB; Watershed (search for similar items in EconPapers)
Date: 2019
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DOI: 10.1007/s11269-019-02329-1

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