[GRASS-user] Hydroligics in grass

[M S]

Another module that might be applicable is r.sim.water
http://grass.itc.it/grass65/manuals/html65_user/r.sim.water.html

Mark

> On Fri, Dec 11, 2009 at 1:44 PM, Joop Goedbloed <jlgoedbloed at hetnet.nl> wrote:
>> Hi Users on the list
>>
>> To trace back the overland flood mechanism in (sub)urban area I've done some
>> experiments in grass.
>> (Sub)urban areas has in general a sewer-system (combined or storm).
>> One of the design-parameters of a sewer is the maximal capacity of rainfall,
>> in most cases e sewer is design
>> to carry off about 20mm/h rain.
>>
>> In case of very heavy storm about 60 mm/h the sewer becoms full and an
>> overland flood mechanism come into being.
>>
>> I've a 5x5 meter grid DEM of the area.
>> In grass there are several modules to simulate overland flood.
>>
>> * r. terraflow
>> * r.watershed
>> * r.topmodel
>> * r.topidx
>>  ...
>>
>> What is the most useful module(s) in grass to simulate overland flood
>> mechanism?
>>
>>
>> First I used the r.terraflow module the resulting accumulation map is here:
>> Terraflow accumulation map
>>
>> Using the r.watershed module resulting  streammap is here:
>> Watershed stream map
>>
>> In both maps the red boxes are the complaints of water flood
>> A foto of the real situation is here
>> Foto
>>
>> Thanks
>>
>> Joop Goedbloed
>>
>>
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>> http://lists.osgeo.org/mailman/listinfo/grass-user
>>
>>
>
>
>
> --
> Stephen Sefick
>
> Let's not spend our time and resources thinking about things that are
> so little or so large that all they really do for us is puff us up and
> make us feel like gods.  We are mammals, and have not exhausted the
> annoying little problems of being mammals.
>
>                                                                -K. Mullis
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