yeah, i can say it is a drainage area. I didnt mean to say that my area was erroneous. It is just that i have used Planimeter to calculate directly from Toposheet and I have used DEM in GIS. And this two resulting areas varies within 10%. So, i am confused which one is accurate or let me say...
There seems to be various methods for calculating the catchment area. And each method gives an area which varies in around 10% to other method. Can anyone give me which method is more appropriate and why?
What is the difference between Projection system and co-ordinate system. Is the "Northing and Easting" same to Latitude and Longitude? can anyone please give me the reasons behind why we use certain system?
