Elevation Data
Elevation data: 250k
DEM's: (USGS DEM format): Digital elevation model and index map.
What
is a DEM? (USGS).
Elevation data: 100k
DEM's: (USGS DEM format). About
2-Arc-Second
DEM's (USGS).
Elevation data: 24k
DEM's: About 7.5-minute
DEM's. ArcView extension to convert USGS
SDTS DEM format.
National and international elevation data