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Table-1 : Data Base of Alur Taluk 
  
  
SI. Thematic Layer Type Source 
No. (on 1:50,000 Scale) 
1. Base map Line/polygon = Survey of India (SOI) Toposheet 
2. Village map Point/polygon Revenue map (1:63,360 scale) 
& District Census Hand Book 
3. Contour map Line/polygon = SOI Toposheet 
4. Slope map Polygon SOI toposheet 
5. Watershed map Polygon SOI toposheet & satellite image 
6. Drainage map Line SOI toposheet & satellite image 
7. Soil map Polygon NBSS&LUP map (1:250,000 scale) 
8. Geology map Polygon Satellite image & GSI map 
9. Lineament map Line Satellite image 
10. Ground water potential Polygon Satellite image and collateral data 
zone map 
11. Forest type map Polygon Satellite image and collateral data 
12. Wasteland map Polygon Satellite image and collateral data 
13. Landuse map Polygon Satellite image and collateral data 
14. Settlement map Point District census handbook 
15. Facilities map Point District census handbook 
(Post office, telegraph 
office, hospitals, schools) 
16. Population distribution Polygon District census handbook 
map 
17. Population density map Polygon District census handbook 
  
104 
  
Tab 
Gro 
Pote 
(Hy 
Soil 
Lanc 
Slop 
Line