New Lidar, Same Old Model

[bb23538]

I plan to update the geometry for a RAS model made in 2001 with LiDAR from 2008. I am new to RAS and I am curious if someone can outline the best approach to doing this?

[dueckrandy]

If you have more than 2 or 3 cross sections to update, I would highly recommend using the GeoRAS tool for ArcGIS, if you can get access to it. The User Manual for GeoRAS is excellent.
Depending on how good your current model is (ie. is it georeferenced, are the n-values good, etc.), availability of aerial imagery, land use data, and other things, you will have to decide how much detail you want to put into your GeoRAS model. GeoRAS is simply a tool to get your RAS model built and populated.

Due to the hugeness of this kind of task, I can’t give you a detailed outline of steps, but feel free to ask specific questions along the way, and I can try to point you in the right direction.

Hope this helps.

[Author]

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