There is TauDEM if you can accept converting to ASCII grid
(http://moose.cee.usu.edu/taudem/taudem.html) or DiGEM (if it still works,
there has been problems with the expiration
http://www.geogr.uni-goettingen.de/pg/saga/digem/index.html) or PC Raster
(http://www.geog.uu.nl/pcraster/ an impresive batch/script tool)
Then there is also IDRISI32 (KILEMANJARO) or GRASS
And not to forget StreamBuilder from Aventra (it's has the best MI
integration, can delinate several watersheeds in one pass, dosen't depend
on knowledge on the outlets and has more options)
The big problem is the quality af the DHM and it's quality - its often
nessesary to make a courser grid and do some filtering (average or mean)
I'm living in a relatively flat landscape formed by weather and glaciers.
Our DHM is 25 meter, but most of our calculations is made with a 100 or 150
meter cell size - finer grid doesn't give at better result
Ole Gregor,
Udviklingskonsulent i Milj� og Teknik
Viborg Amt
(45) 87 27 13 07
|---------+---------------------------->
| | Eric Gagnon |
| | <[EMAIL PROTECTED]|
| | .com> |
| | |
| | 24-06-2003 16:02 |
| | |
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>-------------------------------------------------------------------------------------------------------------------------------|
|
|
| Til: MapInfo-L <[EMAIL PROTECTED]>
|
| cc:
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| Vedr.: MI-L Watershed analysis
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>-------------------------------------------------------------------------------------------------------------------------------|
Hi,
Is there a way I can take my grids in Vertical Mapper and create my own
watershed.
Or is there a utility out there that could help me achieve this.
Thanks,
Eric
--
Eric Gagnon, B.Sc.
[EMAIL PROTECTED]
47�02'57"N
67�44'11"W
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