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Deriving rivers / streams from the contour lines;

Question asked by lubna_najeh@hotmail.com on May 3, 2017
Latest reply on May 3, 2017 by xander_bakker

Hi All,

 

I couldn’t figure out if there is a way to derive rivers from the contour lines. I tried to convert a contour to dem by using the Create Tin, tin to Raster tools.

 

Then, I used the following tools in this order:

Fill

Flow direction

Flow accumulation

Raster calculation (setnull ("flowaccumulation",0))

Raster to polyline

 

But the result not seams correct and it displayed as in the screenshot

 

 

What might be the issue here?

 may I need follow another or additional commands

 

 

Thanks in advance,

Lubna

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