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Evaluation of Blue and Green Water Using Combine Stream Flow and Soil Moisture Simulation in Wunna Watershed, India

Evaluation of Blue and Green Water Using Combine Stream Flow and Soil Moisture Simulation in... Quantitative assessment of water availability using blue and green water will enhance water resource management at the local scale. Wunna watershed is a crucial water resource of the Godavari river basin. Calibration and validation are the essential procedure for hydrological modelling assessment. This current study used the combined monthly streamflow and reanalysis derived soil moisture data to estimate blue and green water availability and spatial and temporal variability using the Soil and Water Assessment Tool (SWAT) model. The Nash–Sutcliffe efficiency (NSE) and percent of bias (PBIAS) were used to assess the model performance. It was found that monthly observed streamflow and soil moisture data were well simulated during calibration and validation with NSE greater than 0.50 and less PBIAS value. Blue water and green water storage has been increased from 2001 to 2016, whereas green water flow declined from 2001 to 2016. A higher amount of blue water and green water storage was observed in the southeast region except green water flow and less in the northwest area. This study promotes the use of soil moisture for sustainable water management. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Water Conservation Science and Engineering Springer Journals

Evaluation of Blue and Green Water Using Combine Stream Flow and Soil Moisture Simulation in Wunna Watershed, India

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References (72)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Nature Singapore Pte Ltd. 2022
ISSN
2366-3340
eISSN
2364-5687
DOI
10.1007/s41101-022-00138-z
Publisher site
See Article on Publisher Site

Abstract

Quantitative assessment of water availability using blue and green water will enhance water resource management at the local scale. Wunna watershed is a crucial water resource of the Godavari river basin. Calibration and validation are the essential procedure for hydrological modelling assessment. This current study used the combined monthly streamflow and reanalysis derived soil moisture data to estimate blue and green water availability and spatial and temporal variability using the Soil and Water Assessment Tool (SWAT) model. The Nash–Sutcliffe efficiency (NSE) and percent of bias (PBIAS) were used to assess the model performance. It was found that monthly observed streamflow and soil moisture data were well simulated during calibration and validation with NSE greater than 0.50 and less PBIAS value. Blue water and green water storage has been increased from 2001 to 2016, whereas green water flow declined from 2001 to 2016. A higher amount of blue water and green water storage was observed in the southeast region except green water flow and less in the northwest area. This study promotes the use of soil moisture for sustainable water management.

Journal

Water Conservation Science and EngineeringSpringer Journals

Published: Sep 1, 2022

Keywords: Blue water; Green water; Soil moisture; Streamflow; SWAT; Wunna watershed

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