I have one ArcGIS shapefile of my river basin consisting of many subbasin. Another shapefile showing the location of gridded points over the whole basin (Its latitude and longitude are used as file name of corresponding data file). I'd like to distribute that gridded data corresponding to each subwatershed. Basically, the idea is to know which gridded points belong to which subbasin either inside the boundary or within a certain limit from the boundary. Anybody has an idea how to do this?