<html><head></head><body><div style="font-family: Verdana;font-size: 12.0px;"><div>Hello all!</div>
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<div>I investigate a Glacial Lake Outburst Flood which eroded a lot of material. What i try to do is to backcalculate the event with the simulation tool r.avaflow. For my simulations i need a Pre-Event DEM. I have a Post-Event DEM where the eroded trench is clearly visible. So what i did was to project the Contour lines of the Post-DEM, change them so that the trench is "flattened". Now i try to generate a Pre-Event DEM with these Contour lines. That's the point at which i am struugling. I tried to interpolate the Contour lines (TIN and IDW) but the results were not really satisfying.</div>
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<div>Does anyone have an idea how to get a nice DEM from contour lines?</div>
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<div>Best regards,</div>
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<div>Ulli</div></div></body></html>