Presenter : Rahul Kumar Rai

Type: Poster

Calculation of water volume for any irregular shaped water body is a complicated and laborious task. As the circle of study expands from a small locality to a city, state or a country, existing methods to calculate the water volume tend to become highly expensive and thus non scalable. Therefore, a need arises to devise a simpler, yet highly efficient method which can be generically applied to any geographical area for analysing water volume of lakes. This study presents a novel approach using open source geospatial technologies (GDAL/OGR library) to determine the volume of water in irregularly shaped lakes with embankment. The approach uses spatial vector data for boundaries, vector data for embankments, and depth data to calculate the amount of water present in any given lake. In this study, the above mentioned approach has been described with details of information and implementation. As a followup, results have been tabulated and compared to the results obtained from manual method; and the overall accuracy and feasibility of the new approach has been discussed. In this study, lakes with capacity between 50 Mcft and 70 Mcft were classified as medium sized, while the ones with capacity between 2800 Mcft. to 3500 Mcft were classied as large sized. The mean percentage of error observed is 6.5 percent for medium size lakes and 7.51 percent for larger lakes.