Working on QGIS, I have two layers

 1. buildings (polygons)
 2. flood area (polygons)

I want to get rid of the building located in flood plains. In other words, I need to find where those layers intersect and then delete buildings accordingly. I'm pretty new to GIS.

  • Welcome to GIS SE. As a new user, please take the Tour. We use a Focused question/Best answer model, so be careful of using "and" in your problem statement (e.g., "find ... and ... delete"). As the current answer suggests, finding and deleting are different tasks.
    – Vince
    Dec 10, 2021 at 16:54

2 Answers 2


You can use the processing tool "Extract by location" to extract the buildings that are disjoint from the flood plains:

enter image description here


enter image description hereUse select by location tools on QGIS HERE Vector->Research tools->Select by Location

to know more : https://docs.qgis.org/3.16/fr/docs/user_manual/processing_algs/qgis/vectoroverlay.html?highlight=intersection

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