International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B7. Istanbul 2004 
  
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likely to increase to from 15 per cent at present to almost 40 per 
cent in next decade. In view of this, coastal stretches of bays, 
estuaries, backwaters, seas, creeks, which are influenced by tidal 
action up to 500 m from High Tide Line (HTL) and the land 
to between the Low Tide Line (LTL) and the HTL has been declared 
se as the Coastal Regulation Zone (CRZ). Maps showing wetland 
nd features between HTL and LTL and coastal land use features up 
ter to 500 m from HTL on 1:25,000 scales for the entire Indian coast, 
nd using IRS LISS II and SPOT data were prepared. These maps 
ps provided condition of land use and wetlands during 1990-91, just 
nd before the notification of CRZ issued by the Govt. of India (fig. 
gh 10 a). These maps are 85 per cent accurate at 90 per cent 
for confidence level. The planimetric accuracy is 20-50 m. It was 
his observed that large-scale reclamation of wetlands have been 
ial carried out for residential, industrial, commercial and agricultural 
m purposes. Temporal nature of the IRS data has been used to prove 
ial time of reclamation in few cases. These coastal land use maps 
en were integrated with the other information related to ecology, 
ng tourism, archaeological sites, etc. for classifying coastal zone into 
ng four classes (fig. 10b). CRZ I areas are ecologically sensitive and 
ith most activity are restricted or prohibited in this zone. CRZ II is 
nd developed area and construction activities are permitted under 
Lor certain condition. CRZ III is undeveloped area and limited 
ite activities are permitted. All islands are classified as CRZ IV and 
or no construction activities are permitted. Such maps are prepared 
ole for the entire India's coastline using satellite data CRZ maps are 
ish being used by the State. Governments to prepare coastal zone 
he management plans (Gupta et al. 2000). Recently, Govt. of India 
has issued a notification to use satellite data for preparation of 
1:25,000 scale maps for regional planning. The recent availability 
of the high-resolution data has helped to prepare local level maps 
on 1:5,000-scale for implementation of CRZ measures. The 
interaction between various activities conducted in the coastal 
zones need to be assessed. This would ensure judicious develop- 
ment of coastal zone without endangering the environment and 
ecology. 
'Acknowledgements 
I am extremely grateful to Dr. K. N. Shankara, Director, and Dr. 
K. L. Majumdar, Deputy Director, Space Applications Centre, 
Ahmedabad for his valuable support and constant encouragement. 
Thanks are to my colleague Dr. Anjali Bahuguna, Dr. M. C. 
Gupta, Shri A. S. Rajawat, Shri H. U. Solanki and Shri H. B. 
Chauhan, for helping me for preparing the manuscript. 
  
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