Groundwater recharge and GOD–T vulnerability datasets for the Moniquirá–Sutamarchán River basin (Boyacá, Colombia)

Description

This dataset contains the GIS layers generated during the development of the GOD–Thomas (GOD–T) aquifer vulnerability model for the Moniquirá–Sutamarchán River basin (Boyacá, Colombia). The dataset is distributed as an ArcGIS geodatabase (.gdb) containing the derived spatial layers used in the vulnerability analysis, including: • Groundwater occurrence factor (G) • Unsaturated zone lithology factor (O) • Depth to groundwater factor (D) • Recharge factor (T) derived from hydrological modelling • Recharge distribution surface • Basin boundary • Digital elevation model • Locations of vertical electrical soundings (VES) The factors G, O, D and T correspond to normalized parameters used in the GOD–T intrinsic vulnerability framework. These layers represent derived analytical products obtained from the integration of hydrogeological information, hydrological modelling, and GIS spatial analysis. Original institutional datasets (geological maps, hydrometeorological records, and hydrogeological reports) are not redistributed in this repository and remain accessible through their respective institutions.

Steps to reproduce

The spatial layers included in this dataset were generated through a GIS-based workflow integrating hydrological modelling and intrinsic aquifer vulnerability assessment. Groundwater recharge was simulated using the Thomas (ABCD) conceptual hydrological model based on hydrometeorological series obtained from the IDEAM DHIME platform (2000–2025). The model was calibrated using observed streamflow data and evaluated using NSE, R² and correlation metrics. Recharge values were spatially distributed within a GIS environment and integrated with the classical GOD aquifer vulnerability framework using four parameters: groundwater occurrence (G), unsaturated zone lithology (O), depth to groundwater (D), and simulated recharge (T). All spatial processing was performed in ArcGIS Pro using the MAGNA–SIRGAS 2018 / Colombia Bogotá coordinate reference system (EPSG:9377) and a spatial resolution of 12.5 m.

Institutions

• Fundación Universitaria Juan de Castellanos

  Boyacá, Tunja
• Universidad Santo Tomás

  Bogota D.C., Bogotá

Categories

Licence