Estimation of groundwater storage loss using surface-subsurface hydrologic modeling in an irrigated agricultural region.

ABSTRACT: In the Mississippi alluvial plain (MAP) area, the demand for groundwater resources from the alluvial aquifer for agricultural irrigation has led to significant reductions in groundwater-level elevation over time. In this study, we use the hydrologic model SWAT + to quantify long-term changes in groundwater storage within the MAP in United States, wherein groundwater is used extensively for irrigation. We apply a linear quantile regression method to perform trend analysis for wet, dry, and average conditions for the 1982-2020 period. The SWAT + model uses the gwflow module to simulate groundwater storage and groundwater-surface water interactions in a physically based spatially distributed manner, with groundwater pumping linked to field-based irrigation demand. Results indicate significant

SUBMITTER: Abbas SA 

PROVIDER: S-EPMC11897132 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature