Implications of water management representations for watershed hydrologic modeling in the Yakima River basin

<p>Water management substantially alters natural regimes of streamflow through modifying retention time and water exchanges among different components of the terrestrial water cycle. Accurate simulation of water cycling in intensively managed watersheds, such as the Yakima River basin (YRB) in...

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Main Authors: J. Qiu, Q. Yang, X. Zhang, M. Huang, J. C. Adam, K. Malek
Format: Article
Language:English
Published: Copernicus Publications 2019-01-01
Series:Hydrology and Earth System Sciences
Online Access:https://www.hydrol-earth-syst-sci.net/23/35/2019/hess-23-35-2019.pdf
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author J. Qiu
Q. Yang
X. Zhang
M. Huang
J. C. Adam
K. Malek
author_facet J. Qiu
Q. Yang
X. Zhang
M. Huang
J. C. Adam
K. Malek
author_sort J. Qiu
collection DOAJ
description <p>Water management substantially alters natural regimes of streamflow through modifying retention time and water exchanges among different components of the terrestrial water cycle. Accurate simulation of water cycling in intensively managed watersheds, such as the Yakima River basin (YRB) in the Pacific Northwest of the US, faces challenges in reliably characterizing influences of management practices (e.g., reservoir operation and cropland irrigation) on the watershed hydrology. Using the Soil and Water Assessment Tool (SWAT) model, we evaluated streamflow simulations in the YRB based on different reservoir operation and irrigation schemes. Simulated streamflow with the reservoir operation scheme optimized by the RiverWare model better reproduced measured streamflow than the simulation using the default SWAT reservoir operation scheme. Scenarios with irrigation practices demonstrated higher water losses through evapotranspiration (ET) and matched benchmark data better than the scenario that only considered reservoir operations. Results of this study highlight the importance of reliably representing reservoir operations and irrigation management for credible modeling of watershed hydrology. The methods and findings presented here hold promise to enhance water resources assessment that can be applied to other intensively managed watersheds.</p>
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spelling doaj.art-5f592022370d4cf280e09a7d80f373842022-12-22T00:18:51ZengCopernicus PublicationsHydrology and Earth System Sciences1027-56061607-79382019-01-0123354910.5194/hess-23-35-2019Implications of water management representations for watershed hydrologic modeling in the Yakima River basinJ. Qiu0Q. Yang1X. Zhang2M. Huang3J. C. Adam4K. Malek5Joint Global Change Research Institute, Pacific Northwest National Laboratory, College Park, MD 20740, USAJoint Global Change Research Institute, Pacific Northwest National Laboratory, College Park, MD 20740, USAJoint Global Change Research Institute, Pacific Northwest National Laboratory, College Park, MD 20740, USAEarth System Analysis and Modeling Group, Atmospheric Sciences & Global Change Division, Pacific Northwest National Laboratory, Richland, WA 99354, USADepartment of Civil and Environmental Engineering, Washington State University, Pullman, WA 99164, USADepartment of Civil and Environmental Engineering, Washington State University, Pullman, WA 99164, USA<p>Water management substantially alters natural regimes of streamflow through modifying retention time and water exchanges among different components of the terrestrial water cycle. Accurate simulation of water cycling in intensively managed watersheds, such as the Yakima River basin (YRB) in the Pacific Northwest of the US, faces challenges in reliably characterizing influences of management practices (e.g., reservoir operation and cropland irrigation) on the watershed hydrology. Using the Soil and Water Assessment Tool (SWAT) model, we evaluated streamflow simulations in the YRB based on different reservoir operation and irrigation schemes. Simulated streamflow with the reservoir operation scheme optimized by the RiverWare model better reproduced measured streamflow than the simulation using the default SWAT reservoir operation scheme. Scenarios with irrigation practices demonstrated higher water losses through evapotranspiration (ET) and matched benchmark data better than the scenario that only considered reservoir operations. Results of this study highlight the importance of reliably representing reservoir operations and irrigation management for credible modeling of watershed hydrology. The methods and findings presented here hold promise to enhance water resources assessment that can be applied to other intensively managed watersheds.</p>https://www.hydrol-earth-syst-sci.net/23/35/2019/hess-23-35-2019.pdf
spellingShingle J. Qiu
Q. Yang
X. Zhang
M. Huang
J. C. Adam
K. Malek
Implications of water management representations for watershed hydrologic modeling in the Yakima River basin
Hydrology and Earth System Sciences
title Implications of water management representations for watershed hydrologic modeling in the Yakima River basin
title_full Implications of water management representations for watershed hydrologic modeling in the Yakima River basin
title_fullStr Implications of water management representations for watershed hydrologic modeling in the Yakima River basin
title_full_unstemmed Implications of water management representations for watershed hydrologic modeling in the Yakima River basin
title_short Implications of water management representations for watershed hydrologic modeling in the Yakima River basin
title_sort implications of water management representations for watershed hydrologic modeling in the yakima river basin
url https://www.hydrol-earth-syst-sci.net/23/35/2019/hess-23-35-2019.pdf
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