[GRASS-user] Dam Failure & mapping of flood risk downstream

GRASS GRASS user
1

Good afternoon,

I have to simulate an artificial dam failure & mapping of flood risk
downstream. I have already generate watershed file thanks to r.watershed.

Now i want to mapping and calculate flood risk downstream (water level /
volume /cubature) from a few available informations like charge,flow,etc.

Could you throw light for me please? If you know other tools and algorithms
that can help me in my study, don't hesitate.

Thank you in advance.

With kind regards.

--
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2

Laurent,

Dambreak analysis is very complex, requiring a lot of in-channel cross-section or bathymetric data and over-bank DEM data, as well as the use of an unsteady hydraulic flow model such as the U.S. Army Corps of Engineers, HEC-RAS model, which has this capability.

However, there are simplified techniques that can approximate detailed analyses, such as:

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CCUQFjAA&url=http%3A%2F%2Fwww.hsdl.org%2F%3Fview%26did%3D8227&ei=rV-JUJGSGYjO0QHEw4BI&usg=AFQjCNHIGNVpLU5UZZ9ZuTfhi-tySFIs8w

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CCUQFjAA&url=http%3A%2F%2Famazon.nws.noaa.gov%2Farticles%2FHRL_Pubs_PDF_May12_2009%2FSeann_Reed%2FValidation_of_GeoSMPDBK_2011_07_22_submit_r2.pdf&ei=BWGJUNODNY6u0AHGlIDICQ&usg=AFQjCNGa3OsBOBVnYlWPKqsOgnBQKKN5Wg

Regards,
Tom

On Thu, Oct 25, 2012 at 10:33 AM, laurent celati <lcelati@latitude-geosystems.com> wrote:

Good afternoon,

I have to simulate an artificial dam failure & mapping of flood risk
downstream. I have already generate watershed file thanks to r.watershed.

Now i want to mapping and calculate flood risk downstream (water level /
volume /cubature) from a few available informations like charge,flow,etc.

Could you throw light for me please? If you know other tools and algorithms
that can help me in my study, don’t hesitate.

Thank you in advance.

With kind regards.

–
View this message in context: http://osgeo-org.1560.n6.nabble.com/Dam-Failure-mapping-of-flood-risk-downstream-tp5011263.html
Sent from the Grass - Users mailing list archive at Nabble.com.

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–

Thomas E Adams
National Weather Service
Ohio River Forecast Center
1901 South State Route 134
Wilmington, OH 45177
 
EMAIL:	[thomas.adams@noaa.gov](mailto:thomas.adams@noaa.gov)
 
VOICE:	937-383-0528
FAX:	937-383-0033