Are there any open source or inexpensive tools to detect and fill sinks on a DEM? ESRI Spatial Analyst is just out of my price range.
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GRASS has r.fill.dir and better yet, r.terraflow, which is one of the few hydrology tools to work on massive rasters. There's also the Windows-only TauDem, which includes |
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SAGA has several fill methods http://www.saga-gis.org/saga_modules_doc/ta_preprocessor/index.html Flat Detection |
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Landserf (free to use) - Click to Goto Homepage I have used it, and love it. I also think the algorithms are much more accurate in Landserf than in Arc, very very solid maths used and Jo Wood lists the maths used for his analysis. |
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Yeap, there is. I haven't tested yet, but I ran my eyes trough the source code. It seems a good program. |
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