Thanks to Markus and Ivan for the help-- I'll answer this on the forum in case others have the same problem in the future.
For the record, I am using GRASS 6.4.4 on Mac OS 10.9.5. The problem was that though I ran r.fill.dir once, there were still sinks in my DEM. After running r.fill.dir 5 total times, I removed all of the sinks in the DEM and r.drain worked well. Thanks for indulging a new user! Charlie On Tue, Oct 28, 2014 at 11:52 AM, Ivan Marchesini <ivan.marches...@gmail.com > wrote: > Hi, > could be that the dtm is not really/completelly filled. Please try to > verify the elevations of the dtm cells surrounding the one where the drain > stops. > Best > On 28 Oct 2014 17:19, "cmshobe" <charles.sh...@colorado.edu> wrote: > >> Hi all, >> >> I am using r.drain with an elevation raster as input. I filled the >> elevation >> raster using r.fill.dir. When I run r.drain, it only creates a short path >> segment before finishing the analysis, even though it hasn't come close to >> the region border. There should not be any sinks in my elevation raster >> because I filled it. Does anyone have any experience with this problem? >> >> Thanks! >> >> Charlie >> >> >> >> -- >> View this message in context: >> http://osgeo-org.1560.x6.nabble.com/r-drain-stops-after-short-segment-tp5170003.html >> Sent from the Grass - Users mailing list archive at Nabble.com. >> _______________________________________________ >> grass-user mailing list >> grass-user@lists.osgeo.org >> http://lists.osgeo.org/mailman/listinfo/grass-user >> >
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