A friend of mine also suggested Lines to Point, then Points to Continuous Anyway... 1) I bumped up the number of points via ArcMap Options and tried TopoToRaster again - FAILED! Maybe there are some of the options I should tinker with? See attached image 2) Dice - I'm sure it done something but I took it to 750,000 and re-ran TopoToRaster but FAILED saying "too many points in the contour polyline" so I diced it further to 500k, 250k, 100k and then to 10k at which point TopoToRaster WORKED Thanks for the help Dean
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