Assessment of Water Resources: Case Study on the Blue and Green Water Resources in the Wei River Basin
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Abstract:
The hydrological model approach is considered as an efficient way to assess the characteristics of spatiotemporal variation of blue and green water resources, after review on the concept of blue water and green water, and comprehensive analysis of assessment methods. In order to quantify the available water resources in the Wei River Basin (WRB), a hydrological model was developed by using SWAT (Soil and Water Assessment Tool), and calibrated and validated with SUFI-2 (Sequential Uncertainty Fitting program) based on river discharge in the WRB. Sensitivity and uncertainty analysis were also performed to improve the model performance. Different components of water resources for blue water flow, green water flow, and green water storage were estimated at the Hydrological Response Unit (HRU) scale, river catchments, and city/region scales during the past 50 years. This study will provide scientific basis for the planning and management of water resources, and optimal utilization of water resources in the water scare region in the Northwest of China.
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