Digital Elevation data record the terrain height variations from the processed SRTM surface elevation 3 second grid data with a drape surface overlain. This National Gravity...
Ordnance Survey’s OS Terrain 5 DTM is a dataset representing the physical shape of the real world. The dataset includes 5 metre GRID. The DTM data is captured from Ordnance Survey’s large scale...
These contours connect points of equal elevation at 2-foot intervals, and are one of a suite of topographic datasets available from NH GRANIT that convey the shape of the Earth's surface.
New Hampshire Geospatial Data Portal2025-05-13 更新00