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How is a DTM used in hydraulic engineering projects when working with QGIS?

closed as not a real question by underdark Jan 9 '13 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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