ABSTRACT:

Observations, groundwater model ensemble and code for Bhaduri et al. (Hydrogeology Journal). Hydraulic conductivity, recharge and pumping of the fractured granite-gneiss aquifer of the Berambadi catchment (Kabini Critical Zone Observatory, Karnataka, India) were estimated from 44 December 2018 heads with FEFLOW 10 and PESTPP-IES. The resource holds the calibration heads, monthly depth to water of the Berambadi network (2010–2021), regional South Gundal heads (2009–2023), nitrate and major-ion surveys (2012–2020), camera fracture logs of 84 boreholes (2025–2026), GIS layers, the FEFLOW models, prior and posterior parameter ensembles, flow solutions for three recharge-pumping structures, and Python and MATLAB scripts that reproduce all statistics and figures.

ABSTRACT:

Code, inputs and crop data-source summaries for the Central Valley Groundwater Nitrogen Loading Model (CV-GNLM) used in Bhaduri et al. (Nature Sustainability, 2026). The resource reproduces 2020 nitrogen (N) surplus (potential root-zone N loading) at 50 m resolution across California's Central Valley under bounded combinations of crop fertilizer and harvest N from UC Davis Cost and Return Studies, CDFA, USDA surveys and census, and Irrigation and Nitrogen Management Plan (INMP) reports, with full, half and no dairy manure. township.m runs the 2020 model and maps township hotspot ranks and Groundwater Protection targets; the README lists all files and steps.