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<p id="banner-replace"><span style="font-size:6.0pt;font-family:"Arial",sans-serif;color:#878A87">Agissons au quotidien pour préserver notre environnement. N’imprimez ce courrier et les documents joints que si nécessaire<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">De :</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> QGIS-User <qgis-user-bounces@lists.osgeo.org>
<b>De la part de</b> GPS Admin via QGIS-User<br>
<b>Envoyé :</b> jeudi 18 septembre 2025 09:05<br>
<b>À :</b> qgis-user@lists.osgeo.org<br>
<b>Objet :</b> [Qgis-user] How do I add a dam to a project then calculate its volume<o:p></o:p></span></p>
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<p class="MsoNormal">Greetings!<br>
<br>
This is my first question for this list and I am new to qgis, so be gentle!<br>
<br>
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.<br>
<br>
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.<br>
<br>
1) What is the best general workflow for this project?<br>
<br>
2) How can I add the dam as 3D feature? The dam is not straight, it is arched. <br>
<br>
3) What is the best way to calculate the fill required?<br>
<br>
Thanks!<br>
<br>
- Ron<br>
<br>
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