I am a research student doing Phd in civil engineering at Indian
Institute of Technology, Bombay, India. I am working in the areas of
development of Knowledge Based decision Support system for watershed
Currently I am concentrating on development of surface runoff
models spatially. For the estimation of length of flow and hence time of
travel I am following the eight direction pour-point model method for
flow. I have used a heristic approach where in which with the given pixel
as centre,a circle is drawn and elevation are noted for all the pixels on
the circumference.This procedure is increased by increasing the radius and
degrees till it hits a stream.Length will be estimated from given
pixel position to a position when it hits the stream. After this again it
is to compare whether this point is having minimum elevation,ifnot
increase again the radius.
Once the pixel on drainage is reached, thereby reaching the outlet of
watershed is easier. However, I am doubtful from validation point of
Could you please advise me in this regard. Your suggestion on this will
Thanking you sir
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