Table 1 The information on the data sources used to create the theme layers.
S.No | Thematic maps | Data sources | Resolutions | Criterion |
|---|---|---|---|---|
1 | Rainfall | Public Works Department (From 2009 to 2022) | Rainfall distribution map | |
2 | DEM/Slope | SRTM (30 m)/USGS | 33 m | Slope percentage |
3 | Drainage density | NRSC – Bhuvan | 1:50000 | Drainage network |
4 | Lithology | Bhukosh, Geological Survey of India | 1:50000 | Rock formations types |
5 | Geomorphology | Bhukosh, Geological Survey of India | 1:250000 | Landform types |
6 | LULC | ESRI Sentinel-2/ USGS | 10 m | Different landscape Use |
7 | Soil type | National Bureau of Soil Survey (ICAR) and Department of Agriculture, Tamil Nadu | 1:250000 | Soil groups, depth, texture, and permeability |
8 | Lineament density | NRSC-Bhuvan Thematic Services | 1:50000 | Underground faults and fractures |
