Re: [Qgis-user] River Flood modelling
Hi, Recently there has been a discussion on a similar task: https://lists.osgeo.org/pipermail/grass-user/2018-September/079127.html Where solutions were discussed for manually digitized streams. If you however can live with deriving streams from a terrain module, I would use the r.stream.* modules for this job: https://grasswiki.osgeo.org/wiki/R.stream.*_modules Especially, r.stream.distance: https://grass.osgeo.org/grass74/manuals/addons/r.stream.distance.html Hope that helps. Cheers Stefan -Original Message- From: Qgis-user On Behalf Of Jonathan Moules Sent: fredag 25. januar 2019 23:55 To: qgis-user@lists.osgeo.org Subject: Re: [Qgis-user] River Flood modelling Hi Nicolas, If you don't get a reply here that solves your issue it may be worth asking on the GRASS mailing list. I know GRASS has a lot of hydrographic tools and it's integrated into QGIS so... https://lists.osgeo.org/mailman/listinfo/grass-user Jonathan On 2019-01-25 06:52, Nicolas Cadieux wrote: > Hi, > > I know it can't be that simple but I would like to model a river flood > in a mountainous area. I am looking for something like the Saga Lake > flood module with a LiDAR derived DEM, a seed but with the possibility > to add X amount of water. It's basically a lake and dam scenario and > you just add water and figure out where the water goes down the valley > when it goes over the dam. Of course I can't use the normal lake > flood modules because rivers are not flat therefore I need something > that takes the downhill valley shape into consideration. Also, I am > not looking for a simple channel network map with lines and points. I > would like the actual polygon or raster representation of the 2D shape > of the river channel. Can you please point me in the right direction. > > Nicolas > > ___ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] River Flood modelling
That looks interesting, Regis Will be good to point them to MDAL, if you have any point of contact. If they add suppport for their output in MDAL, their results can be easily visualised in QGIS as a mesh. Regards Saber On Sat, 26 Jan 2019, 19:29 Régis Haubourg Hi, another one, > http://hydra-software.net/ > the qgis plugin helps a lot in creating the a correct mesh with 1D /2D > areas. The flood modeling algorithm is freeware, not open source (yet?). > I've been really impressed by the qgis plugin features and the accuracy in > territory segmentation it allows. > Best regards, > Régis > > Le sam. 26 janv. 2019 à 20:24, Saber Razmjooei < > saber.razmjo...@lutraconsulting.co.uk> a écrit : > >> AnuGA results are now fully supported in QGIS 3.5 mesh layer. You can >> load the SWW file directly. >> >> In addition, you can look into HEC RAS, the 2-dimensional results can >> again be loaded directly as a mesh layer in QGIS. There is also RiverGIS >> plugin which helps you build your model. >> >> Regards >> Saber >> >> >> On Sat, 26 Jan 2019 at 18:49, Tim Sutton wrote: >> >>> Hi >>> >>> Maybe you want to check out ANUGA too…. https://anuga.anu.edu.au >>> >>> >>> Regards >>> >>> Tim >>> >>> On 25 Jan 2019, at 08:52, Nicolas Cadieux >>> wrote: >>> >>> Hi, >>> >>> I know it can't be that simple but I would like to model a river flood >>> in a mountainous area. I am looking for something like the Saga Lake flood >>> module with a LiDAR derived DEM, a seed but with the possibility to add X >>> amount of water. It's basically a lake and dam scenario and you just add >>> water and figure out where the water goes down the valley when it goes over >>> the dam. Of course I can't use the normal lake flood modules because >>> rivers are not flat therefore I need something that takes the downhill >>> valley shape into consideration. Also, I am not looking for a simple >>> channel network map with lines and points. I would like the actual polygon >>> or raster representation of the 2D shape of the river channel. Can you >>> please point me in the right direction. >>> >>> Nicolas >>> >>> ___ >>> Qgis-user mailing list >>> Qgis-user@lists.osgeo.org >>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user >>> >>> >>> >>> >>> >>> >>> >>> --- >>> >>> *Tim Sutton* >>> t...@qgis.org >>> >>> >>> >>> >>> ___ >>> Qgis-user mailing list >>> Qgis-user@lists.osgeo.org >>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user >> >> >> >> -- >> Saber Razmjooei >> www.lutraconsulting.co.uk >> +44 (0)7568 129733 >> ___ >> Qgis-user mailing list >> Qgis-user@lists.osgeo.org >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > > ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] River Flood modelling
Hi, another one, http://hydra-software.net/ the qgis plugin helps a lot in creating the a correct mesh with 1D /2D areas. The flood modeling algorithm is freeware, not open source (yet?). I've been really impressed by the qgis plugin features and the accuracy in territory segmentation it allows. Best regards, Régis Le sam. 26 janv. 2019 à 20:24, Saber Razmjooei < saber.razmjo...@lutraconsulting.co.uk> a écrit : > AnuGA results are now fully supported in QGIS 3.5 mesh layer. You can load > the SWW file directly. > > In addition, you can look into HEC RAS, the 2-dimensional results can > again be loaded directly as a mesh layer in QGIS. There is also RiverGIS > plugin which helps you build your model. > > Regards > Saber > > > On Sat, 26 Jan 2019 at 18:49, Tim Sutton wrote: > >> Hi >> >> Maybe you want to check out ANUGA too…. https://anuga.anu.edu.au >> >> >> Regards >> >> Tim >> >> On 25 Jan 2019, at 08:52, Nicolas Cadieux >> wrote: >> >> Hi, >> >> I know it can't be that simple but I would like to model a river flood in >> a mountainous area. I am looking for something like the Saga Lake flood >> module with a LiDAR derived DEM, a seed but with the possibility to add X >> amount of water. It's basically a lake and dam scenario and you just add >> water and figure out where the water goes down the valley when it goes over >> the dam. Of course I can't use the normal lake flood modules because >> rivers are not flat therefore I need something that takes the downhill >> valley shape into consideration. Also, I am not looking for a simple >> channel network map with lines and points. I would like the actual polygon >> or raster representation of the 2D shape of the river channel. Can you >> please point me in the right direction. >> >> Nicolas >> >> ___ >> Qgis-user mailing list >> Qgis-user@lists.osgeo.org >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user >> >> >> >> >> >> >> >> --- >> >> *Tim Sutton* >> t...@qgis.org >> >> >> >> >> ___ >> Qgis-user mailing list >> Qgis-user@lists.osgeo.org >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > > > > -- > Saber Razmjooei > www.lutraconsulting.co.uk > +44 (0)7568 129733 > ___ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] River Flood modelling
AnuGA results are now fully supported in QGIS 3.5 mesh layer. You can load the SWW file directly. In addition, you can look into HEC RAS, the 2-dimensional results can again be loaded directly as a mesh layer in QGIS. There is also RiverGIS plugin which helps you build your model. Regards Saber On Sat, 26 Jan 2019 at 18:49, Tim Sutton wrote: > Hi > > Maybe you want to check out ANUGA too…. https://anuga.anu.edu.au > > > Regards > > Tim > > On 25 Jan 2019, at 08:52, Nicolas Cadieux > wrote: > > Hi, > > I know it can't be that simple but I would like to model a river flood in > a mountainous area. I am looking for something like the Saga Lake flood > module with a LiDAR derived DEM, a seed but with the possibility to add X > amount of water. It's basically a lake and dam scenario and you just add > water and figure out where the water goes down the valley when it goes over > the dam. Of course I can't use the normal lake flood modules because > rivers are not flat therefore I need something that takes the downhill > valley shape into consideration. Also, I am not looking for a simple > channel network map with lines and points. I would like the actual polygon > or raster representation of the 2D shape of the river channel. Can you > please point me in the right direction. > > Nicolas > > ___ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > > > > > > > > --- > > *Tim Sutton* > t...@qgis.org > > > > > ___ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user -- Saber Razmjooei www.lutraconsulting.co.uk +44 (0)7568 129733 ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] River Flood modelling
Hi Maybe you want to check out ANUGA too…. https://anuga.anu.edu.au Regards Tim > On 25 Jan 2019, at 08:52, Nicolas Cadieux > wrote: > > Hi, > > I know it can't be that simple but I would like to model a river flood in a > mountainous area. I am looking for something like the Saga Lake flood module > with a LiDAR derived DEM, a seed but with the possibility to add X amount of > water. It's basically a lake and dam scenario and you just add water and > figure out where the water goes down the valley when it goes over the dam. > Of course I can't use the normal lake flood modules because rivers are not > flat therefore I need something that takes the downhill valley shape into > consideration. Also, I am not looking for a simple channel network map with > lines and points. I would like the actual polygon or raster representation > of the 2D shape of the river channel. Can you please point me in the right > direction. > > Nicolas > > ___ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user --- Tim Sutton t...@qgis.org ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] River Flood modelling
Hi Nicolas and Jonathan, and not to forget Whitebox as extra hydrological software the results of which may be imported: http://www.uoguelph.ca/~hydrogeo/Whitebox/ Thomas Am 25.01.2019 um 23:54 schrieb Jonathan Moules: Hi Nicolas, If you don't get a reply here that solves your issue it may be worth asking on the GRASS mailing list. I know GRASS has a lot of hydrographic tools and it's integrated into QGIS so... https://lists.osgeo.org/mailman/listinfo/grass-user Jonathan On 2019-01-25 06:52, Nicolas Cadieux wrote: Hi, I know it can't be that simple but I would like to model a river flood in a mountainous area. I am looking for something like the Saga Lake flood module with a LiDAR derived DEM, a seed but with the possibility to add X amount of water. It's basically a lake and dam scenario and you just add water and figure out where the water goes down the valley when it goes over the dam. Of course I can't use the normal lake flood modules because rivers are not flat therefore I need something that takes the downhill valley shape into consideration. Also, I am not looking for a simple channel network map with lines and points. I would like the actual polygon or raster representation of the 2D shape of the river channel. Can you please point me in the right direction. Nicolas ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] River Flood modelling
Hi Nicolas, If you don't get a reply here that solves your issue it may be worth asking on the GRASS mailing list. I know GRASS has a lot of hydrographic tools and it's integrated into QGIS so... https://lists.osgeo.org/mailman/listinfo/grass-user Jonathan On 2019-01-25 06:52, Nicolas Cadieux wrote: Hi, I know it can't be that simple but I would like to model a river flood in a mountainous area. I am looking for something like the Saga Lake flood module with a LiDAR derived DEM, a seed but with the possibility to add X amount of water. It's basically a lake and dam scenario and you just add water and figure out where the water goes down the valley when it goes over the dam. Of course I can't use the normal lake flood modules because rivers are not flat therefore I need something that takes the downhill valley shape into consideration. Also, I am not looking for a simple channel network map with lines and points. I would like the actual polygon or raster representation of the 2D shape of the river channel. Can you please point me in the right direction. Nicolas ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] River Flood modelling
Hi, I know it can't be that simple but I would like to model a river flood in a mountainous area. I am looking for something like the Saga Lake flood module with a LiDAR derived DEM, a seed but with the possibility to add X amount of water. It's basically a lake and dam scenario and you just add water and figure out where the water goes down the valley when it goes over the dam. Of course I can't use the normal lake flood modules because rivers are not flat therefore I need something that takes the downhill valley shape into consideration. Also, I am not looking for a simple channel network map with lines and points. I would like the actual polygon or raster representation of the 2D shape of the river channel. Can you please point me in the right direction. Nicolas ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
