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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/15075
Title: Improved cn-based long-term hydrologic simulation model
Authors: Jain K.M.
Durbude D.G.
Mishra, Surendra Kumar
Published in: Journal of Hydrologic Engineering
Abstract: Employing the advanced soil moisture accounting (ASMA) procedure and the modified subsurface drainage flow concept, a curve number (CN)-based model, named as modified long-term hydrologic simulation advance soil moisture accounting (MLTHS ASMA) model, is proposed to simulate daily flows. Its application to 17 watersheds falling in different agro-climatic zones of India and comparison with the existing long-term hydrologic simulation advance soil moisture accounting (LTHS ASMA) model reveal that the proposed model yields higher efficiency, lower standard error of estimate (SE) and percentage relative error (RE) values for high runoff producing wet watersheds, and lower efficiency for low runoff producing dry watersheds, indicating a very good model response to wet watersheds, and good to satisfactory-to-dry watersheds. On most watersheds, the proposed model performed better than the existing one. In addition, CN parameters for surface and subsurface flows were most sensitive followed by the parameters related with soil characteristics, and the significance of base flow was greater in wet watersheds than in dry watersheds.© 2012 American Society of Civil Engineers.
Citation: Journal of Hydrologic Engineering (2012), 17(11): 1204-1220
URI: https://doi.org/10.1061/(ASCE)HE.1943-5584.0000592
http://repository.iitr.ac.in/handle/123456789/15075
Issue Date: 2012
Keywords: Curve number
Hydrologic simulation models
Rainfall-runoff relationship
SCS
Subsurface flow
Surface flow
ISSN: 10840699
Author Scopus IDs: 57190863829
15839072000
55463271000
Author Affiliations: Jain, K.M., Dept. of Hydrology, Indian Institute of Technology Roorkee, Roorkee, India
Durbude, D.G., Central Soil and Water Conservation Research and Training Institute, Datia, (M.P.), India, Environmental Hydrology Division, National Institute of Hydrology, Roorkee, India
Mishra, S.K., Dept. of Water Resources Development and Management, Indian Institute of Technology Roorkee, Roorkee, India
Corresponding Author: Jain, K.M.; Dept. of Hydrology, Indian Institute of Technology Roorkee, Roorkee, India; email: jain.mkj@gmail.com
Appears in Collections:Journal Publications [WR]

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