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slope of upslope area   Tom Mueller Mar 18, 2010
Re: slope of upslope area   William Huber Mar 18, 2010
Re: slope of upslope area   Tom Mueller Mar 18, 2010
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Subject slope of upslope area 
Author Tom Mueller 
Date Mar 18, 2010 
Message I'm trying to calculate the average slope of upslope areas. The way I have done this is 1) calculate flow direction, 2) identify a grid point next to a stream and export it as a shape file, 3) use the watershed command to calculate the upslope area, 4) then multiply grid of 1's by slope, then calculate the average slope of the grid. Anyone know of a better way.

Thanks,
Tom 
  Tom Mueller
http://www.uky.edu/~mueller/ 
   
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Subject Re: slope of upslope area 
Author William Huber 
Date Mar 18, 2010 
Message One way is to flowaccumulate the slope, flowaccumulate a constant unit grid, then divide the former by the latter. 
  --Bill Huber
Quantitative Decisions (http://www.quantdec.com )
More GIS Q&A at http://gis.stackexchange.com/q/3083/664 
   
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Subject Re: slope of upslope area 
Author Tom Mueller 
Date Mar 18, 2010 
Message Bill,

Wow, I tried this....and it seams to be realistic. How the heck did you think of that. Your hired!

Let me think this through a bit and see if this is right but I think it is.

Best Tom 
  Tom Mueller
http://www.uky.edu/~mueller/