I have a large polygon shapefile that describes a river catchment. I also have another polygon shapefile that contains a number of smaller polygons that represent districts.
I would like to create a new shapefile, containing only those wards that are at least partially in the large polygon (the river catchment).
I think that clipping will get rid of those parts of the districts outside the river basin. However, I want to retain those parts of the districts that are partially inside the basin.
What function can I use?