Volume No. 6 Issue No.: 3A Page No.: 758-762 Jan-Mar 12

 

LANDSCAPE CHANGES ASSESSMENT AIDED BY GEOGRAPHICAL INFORMATION SYSTEM (GIS) : A STUDY CONDUCTED AT SASTHAMCOTTAH LAKE, INDIA

 

Ruchira Chaudhary and Rachana S. Pillai*

Department of Zoology, Government Motilal Vigyan Mahavidyalaya, Bhopal, Madhya Pradesh (INDIA)

 

Received on : November 25, 2011

 

ABSTRACT

 

Wetland studies carried out using the conventional equipments like theodolite, plane table, sextant, range finders, sounding rods, echo-sounders and slow moving boats are time consuming and sometimes it takes up to three years to complete the survey of a major Ramsar Site i.e. Sasthamcottah lake , Kerala, India. During such long time of survey, the siltation pattern and the bed levels also get changed. So the need to update the sediment measurement techniques and to introduce latest technology available in the field is required to overcome the difficulties faced in the conventional method especially in major lakes and reservoirs. With this objective, the present study of the assessment of lake area change of Sasthamcottah lake is carried out using remote sensing and GIS techniques. The revised lake area is 356.17 Ha. and the revised lake capacity is 32806.322 M. Cu.m. In this way each year the lake area changes can be detected as well as compared with the data of the previous years.

 

Keywords : Remote Sensing, G.I.S., Echo-Sounder, Sextant, Theodolite, Ramsar site

 

 

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