Shapefile showing the layout of the MERIT-Hydro tiles.

I created this in QGIS. 

It's a 5° grid, with the naming conventions described on this page:
http://hydro.iis.u-tokyo.ac.jp/~yamadai/MERIT_Hydro/

I used this to create the mapping between the grid tiles and the level 2 basins
used by MERIT-Basins, and as a helper to merge the tiles at the megabasin
scale using a Python script. 

