GRDS Conferences

1. Dr. D. C. JhariyaDr. D. C. Jhariya
Assistant ProfessorAssistant Professor
Department of Applied Geology
National Institute of Technology Raipur
G. E. Road Raipur, Chhattisgarh, INDIA

2. Location Map of the Study Area
Durg
District

3. Ground Water Extraction Status
Source: CGWB, INDIA

4. Why Groundwater is Important ?
97% (1320 mill. Cu. Kms.)
In oceans (saline water)
3% (37.5 mill. Cu.Kms)
Fresh water
Source: CGWB, INDIA

5. Where Groundwater occurs ?
Different kinds of porosity
• Primary Porosity
• Fracture Porosity (secondary porosity)

6. Infiltration
Recharge to ground water
Premonsoon
Water level
Postmonsoon
water level
Water level
fluctuation
Percolation
Water table

7. Application of Remote Sensing & GIS
in Groundwater Potential Study
• Remote sensing and GIS methods permit rapid and cost
effective natural resource survey and management.
• The remote sensing data helps in fairly accurate
hydrogeomorphological analysis and identification and
delineation of land features.
• GIS is a powerful set of tools for collecting, storing,
retrieving, transforming and displaying spatial data from
the real world.

8. Objectives
• To prepare different thematic maps of
the study area.
• To prepare groundwater potential zone
map.

9. Weight assignment for each map units
of thematic layers
Groundwater Potential Zone
Field Validation and Accuracy Assessment
Satellite data
Landsat ETM
Existing Maps, SOI
Toposheets
Interpolation using
theissen polygon
method
Geometric correction
&
Image Enhancement
Thematic map preparation
Geology,
Geomorphology,
Lineament, Drainage
Density
& Soil Texture
Land use/Land cover
Groundwater
Monitoring
Mathodology
Groundwater depth
Map

10. Overlay Analysis
Durg Boundry
Geomorphology
Soil Texture
Groundwater depth
Geology
Land use land cover
Lineament buffer
Drainage

11. Groundwater Potential Zone

12. S. No.
Bore Well
No.
Coordinates
Actual yield from
drilled
borehole (l/h)
Agreement between
expected and actual
yields description
Expected yield
description from the
prediction map
Actual yield
descriptionLatitude Longitude
1 BW1 81° 14' 31.121" E 21° 21' 19.800" N 1530 Disagree Medium–high Low
2 BW2 81° 18' 42.580" E 21° 24' 53.231" N 7845 Agree Very low–low Low
3 BW3 81° 24' 49.849" E 21° 28' 15.362" N 27750 Agree Low–medium High
4 BW4 81° 22' 48.534" E 21° 23' 13.275" N 2300 Agree Low–medium Low
5 BW5 81° 22' 0.766" E 21° 21' 28.181" N 2300 Agree Low–medium Low
6 BW6 81° 29' 58.948" E 21° 17' 58.753" N 15000 Disagree Low–medium high
7 BW7 81° 23' 41.827" E 21° 19' 13.010" N 9050 Agree Low–medium Medium
8 BW8 81° 20' 40.802" E 21° 14' 37.669" N 23700 Agree Medium–high High
9 BW9 81° 25' 40.987" E 21° 12' 0.781" N 2700 Disagree Medium–high Low
10 BW10 81° 16' 54.912" E 21° 10' 49.509" N 15750 Agree Low–medium Medium
11 BW11 81° 32' 49.181" E 21° 0' 43.711" N 16000 Agree Medium–high Medium
• Total number of boreholes = 11
• Number of boreholes where there is agreement between the expected and the
actual yield = 08
• Number of boreholes where there is disagreement between the expected and
the actual yield = 3
• The accuracy % = (08/11)*100 = 72.72 %.

13. Conclusion
• Delineation of the groundwater potential zone in
Durg district of Chhattisgarh, using remote sensing
and GIS techniques is found efficient to minimize
the time, labor and money and thereby enables
quick decision-making for sustainable water
resources development and management.