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Development of a hydrological model for simulation of runoff from catchments unbounded by ridge lines
Vamsikrishna Vema,
Published in Elsevier B.V.
2017
Volume: 551
   
Pages: 423 - 439
Abstract
Watershed hydrological models are effective tools for simulating the hydrological processes in the watershed. Although there are a plethora of hydrological models, none of them can be directly applied to make water conservation decisions in irregularly bounded areas that do not confirm to topographically defined ridge lines. This study proposes a novel hydrological model that can be directly applied to any catchment, with or without ridge line boundaries. The model is based on the water balance concept, and a linear function concept to approximate the cross-boundary flow from upstream areas to the administrative catchment under consideration. The developed model is tested in 2 watersheds – Riesel Experimental Watershed and a sub-basin of Cedar Creek Watershed in Texas, USA. Hypothetical administrative catchments that did not confirm to the location of ridge lines were considered for verifying the efficacy of the model for hydrologic simulations. The linear function concept used to account the cross boundary flow was based on the hypothesis that the flow coming from outside the boundary to administrative area was proportional to the flow generated in the boundary grid cell. The model performance was satisfactory with an NSE and r2 of ≥0.80 and a PBIAS of <25 in all the cases. The simulated hydrographs for the administrative catchments of the watersheds were in good agreement with the observed hydrographs, indicating a satisfactory performance of the model in the administratively bounded areas. © 2017 Elsevier B.V.
About the journal
JournalData powered by TypesetJournal of Hydrology
PublisherData powered by TypesetElsevier B.V.
ISSN00221694
Open AccessNo
Concepts (28)
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    Climate models
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    Hydrology
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    Rivers
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    Runoff
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    Soil conservation
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    Water conservation
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    Water management
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    Watersheds
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    EXPERIMENTAL WATERSHEDS
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    Hydrologic simulations
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    Hydrological modeling
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    HYDROLOGICAL MODELS
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    HYDROLOGICAL PROCESS
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    Model performance
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    WATERSHED HYDROLOGICAL MODEL
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    Watershed management
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    Catchments
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    BASIN MANAGEMENT
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    Catchment
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    Decision making
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    Experimental study
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    Hydrograph
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    Performance assessment
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    Streamflow
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    Water budget
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    CEDAR CREEK RESERVOIR
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    TEXAS
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    United states