Watershed Hydrology Simulation Model of Middle Section of Rio Grande River Basin
Dates
Publication Date
2024-02-14
Start Date
2022-01-01
End Date
2099-12-31
Citation
Mirchi, A., and Samimi, M., 2024, Watershed Hydrology Simulation Model of Middle Section of Rio Grande River Basin: Model release, https://doi.org/10.21429/5v9h-8389.
Summary
The Soil and Water Assessment Tool (SWAT; Arnold et al., 1998) was used in this study to simulate the impacts of climate change, land and water conservation practices, and developing riparian forests on the water budget across the watershed. We used the SWAT 10.2 version in the ARCGIS 10.2 environment. The model has 10 sub-basins and 6661 hydrological response units (HRUs) with similar land use, soil type, and topography (slope). We used the completely calibrated and validated SWAT model of the study area developed by Samimi et al. (2022 & 2023), using a USGS 10 m × 10 m DEM (Digital Elevation Model), Land use information of 2008 (near normal year) to represent the average historical crop pattern (Crop Data Layer, 2008), and Soil Survey [...]
Summary
The Soil and Water Assessment Tool (SWAT; Arnold et al., 1998) was used in this study to simulate the impacts of climate change, land and water conservation practices, and developing riparian forests on the water budget across the watershed. We used the SWAT 10.2 version in the ARCGIS 10.2 environment. The model has 10 sub-basins and 6661 hydrological response units (HRUs) with similar land use, soil type, and topography (slope). We used the completely calibrated and validated SWAT model of the study area developed by Samimi et al. (2022 & 2023), using a USGS 10 m × 10 m DEM (Digital Elevation Model), Land use information of 2008 (near normal year) to represent the average historical crop pattern (Crop Data Layer, 2008), and Soil Survey Geographic Database (SSURGO) soil map. The model was calibrated and validated automatically with SWAT-CUP using the SUFI2 algorithm (Abbaspour, 2015) and manually for monthly streamflow, crop irrigation and ET, and average annual groundwater recharge. The developed model is available and may be provided upon request.
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Purpose
The SWAT model was developed for the study area to simulate the regional hydrology of the watershed with irrigated agriculture to analyze climate change impacts and project the future water availability for agriculture and environmental activities. The model can be used to simulate the impacts of different future climate conditions on the water budget components, irrigation water availability, and crop ET (as an indicator for crop production). It can also be used to investigate the efficiency and applicability of selected land and water conservation methods in the study area. Environmental water allocation scenarios can be simulated by this model to study the changes in agricultural water availability under various scenarios of allocating water resources to expansion of riparian forests.
