The option exists to automatically add a point source to all subbasins. This is a
useful option for cases where watershed delineation is performed without the
knowledge of the locations of all point sources within the watershed. The point
sources added will, by default, have constant loading of zero for all water,
sediment, and nutrient inputs. The use will have the option of then defining inputs
for only those point sources where it is required. To add “place holder” point
sources to all subbasins, check the check box shown in Figure 5.31. The point
sources will all be added during the “Delineate Watershed” operation.