My watershed keeps showing there's no overlap with the watershed grid and I have clearly projected it in the same projection as the watershed and source dem. WGS 84, UTM 32. But when try to use the shapefile, it selects but get stucked on selecting Gridcode.
Dear Agene Isaac,
here are a few suggestions that may help you to resolve the issue of no overlapping between your watershed shapefile and watershed grid in ArcGIS:
The first step is to double check that the watershed shapefile and watershed grid data are truly in the same coordinate system, even if they are both defined as WGS 84 UTM Zone 32N. Use the Define Projection tool to ensure the parameters match exactly. Next, examine the extents to ensure they cover the same geographic area and zoom to the extent of each layer to compare. It is also important to make sure the cell size and snap resolution of the raster grid properly aligns with the resolution and vertices of the watershed shapefile. If not, adjust the raster properties or generalize the shapefile. As a test, create a blank shapefile in the same projection as the grid, draw a polygon in the same area as the watershed, and see if it intersects the grid cells properly to isolate the issue. Additionally, check for invalid geometries in the watershed shapefile with the Check Geometry tool and fix any errors. Finally, be sure the layers are added to ArcMap properly with the grid on the bottom and reset or reorder the layers if needed. Sometimes careful tweaking of the projections and coordinate systems is required to get geospatial data to line up and intersect properly.
Humble Regards,
- Badges
- Science topic
- Similar topics
- Psychology
- Mental Processes
- Learning