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Table 1 Data used in this study and their sources

From: Mapping groundwater nitrate contaminant risk using the modified DRASTIC model: a case study in Ethiopia

Data type

Source of data

Spatial Resolution

Depth to the water table, Aquifer media, Geology, and Hydraulic Conductivity

Amhara Water Work and Drill Enterprise

–

Soil Media

Amhara Design and Supervision Works Enterprise

90 m × 90 m

Precipitation

Ethiopia National Meteorology Agency

–

Digital Elevation Model

The National Aeronautics and Space Administration (NASA) Landsat Imager Resolution

30 m × 30 m

Land use

Amhara Design and Supervision Works Enterprise

30 m × 30 m

Nitrate

Water samples were collected from wells and analyzed in the laboratory for nitrate concentration

–