[Freegis-list] Free tools for modelling and assessment of hydrologic networks

[Bernhard Reiter]

[Was there a reason to follow up on this other thread?]

On Thu, Jan 20, 2005 at 03:50:17PM +0100, Rafael Koch wrote:
> I would like to know if there are free tools suitable to model and assess 
> hydrologic networks (topology, source analysis, query by attribute, flow 
> simulation, etc.). Data storage should preferably be OGC-compliant or 
> possibly made so by exporting to some geodatabase. Any ideas?

Try GRASS which has quite a few possibilities for hydrologic modelling.
E.g. see:
http://grass.itc.it/intro/modelintegration.html
http://www.geog.ubc.ca/courses/klink/gis.notes/hy_mod.html

Free Software can often be used to build much more specific
modelling and decision support systems. 
For an example I participated see GREATER:
http://great-er.intevation.org/screenshots.html
This uses Thuban as frontend.

> What I have by now is an ArcGIS geodatabase containing the network, complete 
> with nodes and junctions. The tools should be able to make use of the data, 
> be it directly or after some exporting/importing. 
> 
> This would lead to the next question: What would be the best practice to 
> migrate data from ArcGIS personal database to PostGIS database?

Depends on the data.

Best,
	Bernhard


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