[Qgis-user] How do I add a dam to a project then calculate its volume

[Emma Hain]

 Hi Ron
Welcome to QGIS!

There is a huge wealth of knowledge out there but for Hydrological
Applications from the amazing Hans van der Kwast
<https://www.youtube.com/@HansvanderKwast> for future reference.

Kind regards
Em

Emma Hain — Product Manager/Senior GIS Analyst
emma at north-road.com
[image: https://north-road.com] *North Road*
Cartography • Development • Spatial Analysis
------------------------------
*north-road.com* <http://north-road.com>
<https://twitter.com/northroadgeo>
<https://www.linkedin.com/company/north-road-studios>
<https://www.facebook.com/North-Road-997236690392419/home>
FOSS4G 2025 <https://2025.foss4g.org/>
17-23 November, Auckland, New Zealand



On Thu, 18 Sept 2025 at 08:22, Sébastien LAGARDE via QGIS-User <
qgis-user at lists.osgeo.org> wrote:

>
>
> Hello.
>
> Have a look a this plugin https://plugins.qgis.org/plugins/CivilEng/
>
> [image: INSIGHT]
>
> [image: img]
> <https://track.cipac.nc/l/ZkN2UlZzdXRTbFFKQzNla1AzWTYwZz09-bDh2a2xCS2VaVHRuaUQzenVMaFphUT09>
>
> [image: img]
> <https://track.cipac.nc/l/ZkN2UlZzdXRTbFFKQzNla1AzWTYwZz09-eFZMaExNZWZGQjMvaVVJaDArTTl6Zz09>
>
> *Sébastien LAGARDE*
>
>
>
> Portable : (+687) 76 82 24
>
> Agissons au quotidien pour préserver notre environnement. N’imprimez ce
> courrier et les documents joints que si nécessaire
>
>
>
> *De :* QGIS-User <qgis-user-bounces at lists.osgeo.org> *De la part de* GPS
> Admin via QGIS-User
> *Envoyé :* jeudi 18 septembre 2025 09:05
> *À :* qgis-user at lists.osgeo.org
> *Objet :* [Qgis-user] How do I add a dam to a project then calculate its
> volume
>
>
>
> Greetings!
>
> This is my first question for this list and I am new to qgis, so be gentle!
>
> We are building a 20 acre (8 hectare) lake and need to design an earthen
> dam and calculate the amount of fill dirt needed to build the dam.
>
> We are starting with lidar data of the entire watershed and have created
> contours, then mapped the shoreline of the lake. I would like to add a dam
> to the model and then calculate the volume of the fill needed to construct
> the dam.
>
> 1) What is the best general workflow for this project?
>
> 2) How can I add the dam as 3D feature? The dam is not straight, it is
> arched.
>
> 3) What is the best way to calculate the fill required?
>
> Thanks!
>
> - Ron
>
>
>
>
> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient>
>
> Virus-free.www.avast.com
> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient>
>
>
> _______________________________________________
> QGIS-User mailing list
> QGIS-User at lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20250918/6edf7409/attachment-0001.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 1058813 bytes
Desc: not available
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20250918/6edf7409/attachment-0001.png>