| API | Description | Category | Mashups |
|---|---|---|---|
| USGS Elevation Query Service | Determine elevation based on latitude and longitude | Mapping | 2 |
| National Map Elevation Query | Terrain and elevation mapping service | Mapping | 0 |
| National Map Viewer | USGS ArcGIS mapping service | Mapping | 0 |
| USGS Contour Service | Contour mapping service | Mapping | 0 |
| USGS Gazetteer Query | Geological data service | Mapping | 0 |
| USGS Greenness Query | Geological data service | Reference | 0 |
| USGS Seamless Datasets | USGS mapping data service | Mapping | 0 |
| USGS United States National Grid Conversion | Geological data service | Reference | 0 |
| USGS Waterservices | Water quality information service | Government | 0 |
| Vs30 map server | Seismic hazard estimating service | Mapping | 0 |





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