defining flow direction automatically..?

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02-20-2011 06:50 PM
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Hi all,

this could well be a Spatial Analyst query but thought I might run it by people in here first:

I am currently investigating ways to model a large drainage network and have been playing around with setting up a geometric network and then using the Utility Network Analyst to trace flows etc..

Of particular interest to me would be a way (if it were possible) of automatically assigning flow direction to a line based on high res contour data whereby a line may be automatically "flipped" to reflect the actual flow direction.

any advice/suggestions would be greatly appreciated.

cheers,
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