Streams and basins (Derived from 1km DEM; Pb. 2007)

- Global Drainage Basin Database (GDBD): Center for Global Environmental Research at the National Institute for Environmental Studies;.
- Free, downloadable; Publish: 2007.
- Derived from DEM: H1k-DEM (HYDRO1k), 1 km resolution by USGS 2000
(250m resolution in Japan; 3 seconds resolution in Korean Peninsula)
- ArcGIS Geodatabase format
<http://www-cger.nies.go.jp/cger-e/db/enterprise/gdbd/gdbd_index_e.html>

Layers
- Drainage basin boundary (polygon)
- River network (polygon)
- Discharge gauging station (point)
- Natural lake (point)
- Dam lake (point)
- Flow direction (raster)

Landuse (1 degree, 8 km and 1 km; 1998)

- UMD Land Cover Classification (University of Maryland; Department of Geography)
- Free, downloadable; 1 degree, 8 km and 1 km pixel resolutions; Product Coverage Date: 1981-1994 , Publish: 1998.
<http://glcf.umiacs.umd.edu/data/landcover/>

Classification
Value, attribute
0 Water
1 Evergreen Needleleaf Forest
2 Evergreen Broadleaf Forest
3 Deciduous Needleleaf Forest
4 Deciduous Broadleaf Forest
5 Mixed Forest
6 Woodland
7 Wooded Grassland
8 Closed Shrubland
9 Open Shrubland
10 Grassland11 Cropland
12 Bare Ground
13 Urban and Built

Elevation data (30m, 90m, 1km; 2000)

- Shuttle Radar Topography Mission (SRTM) Elevation; 30 m, 90 m, 1km pixel resolutions; Product Coverage Date: February 2000.
- Downloadable at The Global Land Cover Facility (GLCF), University of Maryland.
<http://glcf.umiacs.umd.edu/data/srtm/>