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The aim is to develop a modeling framework for accurate groundwater flow simulation in the Kofu Basin, Japan.

June 28, 2026WaterOpen Access

Integrated Modeling Framework for Groundwater Flow Model in Complex Mountain Hydrogeology: A Case Study of the Kofu Basin, Japan

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Randomized trial evaluates groundwater flow in complex mountain basins, suggesting effective modeling strategies.

The aim is to develop a modeling framework for accurate groundwater flow simulation in the Kofu Basin, Japan.
Developed a heterogeneous geological model using multiple boreholes in the Kofu Basin.
Integrated MODFLOW with climate-driven recharge outputs from SWAT+.
Evaluated model performance against previous stable isotope studies.
RMSE improved by 91.28% and MAE decreased by 84.38% post-calibration.
Independent validation produced R2 = 0.9307 and NSE = 0.9254, with RMSE at 32.70 m and MAE at 19.76 m.
Simulated velocity vectors indicated localized shallow flow and coherent regional basinward flow.

Nguyễn et al. (2026) studied this question.

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