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What is DTM in hydraulic projects? and what is application area of QGIS ?

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DTM this can have more than one answer in this case it would be Digital Terrain Model. adsabs.harvard.edu/abs/2009EGUGA..11.7553V – Mapperz♦ Dec 10 '12 at 14:41

closed as not a real question by underdark♦ Jan 9 at 15:55

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QGIS using GRASS to do modelling of Hydrology and DTM's

GRASS GIS, commonly referred to as GRASS (Geographic Resources Analysis Support System), is a free Geographic Information System (GIS) software used for geospatial data management and analysis, image processing, graphics/maps production, spatial modeling, and visualization.

http://grasswiki.osgeo.org/wiki/Hydrological_Sciences#Hydrological_models

Download http://grass.osgeo.org/download/

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