The SRTM 90m digital elevation database is primarily used for: 90 m water body map using multi-temporal Landsat images
This is a widely used, "void-filled" version of the original NASA data. It has been processed to remove gaps caused by radar shadows or water bodies, making it more reliable for hydrological and topographical analysis. Download (90M)
The most prominent "90m" downloads are available through these major scientific repositories: The SRTM 90m digital elevation database is primarily
These models typically cover Earth's landmasses from pole to pole (TanDEM-X) or between 60°N and 56°S latitudes (SRTM). Downloads are standardly provided in GeoTIFF or ArcInfo
Downloads are standardly provided in GeoTIFF or ArcInfo ASCII formats, allowing for easy integration into software like ArcGIS or QGIS. Common Applications
A specialized hydrographic dataset derived from 90m DEMs that maps global river networks, basins, and streamflow with high precision. Key Technical Specifications
The "90m" refers to the pixel spacing at the equator. In geographic terms, this corresponds to 3 arc-seconds .