Spatial Analyst - how to model rivers

Discussion created by vanjay011379 on May 19, 2010
Latest reply on Apr 6, 2011 by nnoman-esristaff

A client of mine needs a layer of new streams in an area of interest.

My source data is 1 meter LIDAR data in a GRID format.

What is the most effective way to model streams?  I am only looking for how to get started.

I obtained the flow accumulation but the results seem a little scattered.  Should I reduce the resolution with an aggregate?

Also, my client informed me to look at ArcHydro.  How does this compare to the tools found in Spatial Analyst?

Thanks in advance!