LiDAR in Hydrology Mapping: USGS Seminar on Topography

Glacier mapping often begins where conventional field surveys reach their limits. There’s a moment in every survey plan when the terrain wins. The slope is too steep, the surface too unstable, the vegetation too thick, or the area is simply too vast for a ground crew to cover in any practical timeframe. For years, that…

How Crowdsourced Bathymetry is Staying Afloat For decades, the deepest parts of the ocean have remained vast, unmapped voids covering most of our planet. Improving global ocean mapping has become a priority, yet the maritime world faces a paradox: a glut of hydrographic data but no efficient way to process it. The bottleneck has moved…

Advanced airborne lidar is transforming gold rush mapping in Victoria, Australia. A four-year survey by the Geological Survey of Victoria uncovered more than 230,000 previously undocumented mining relics hidden beneath dense vegetation, revealing forgotten mine shafts, tunnels, and prospecting pits while improving hazard identification, historical research, and land management. A four-year aerial mapping initiative conducted…