What are the applications of underwater elevation data (bathymetry)?

Feb 25, 2021 ... A digital elevation model (DEM) is a three-dimensional graphic of the "bare earth" surface of land shown without trees, buildings or other ... Elevation measurements are referenced horizontally to Massachusetts State Plane NAD83 meters and vertically to NAVD88. These data capture more detail, and are ... 2019 LiDAR Project ... The 2019 LiDAR Project was a joint effort with USGS in the collection of high-resolution elevation data for approximately 1,080 square ... Jul 15, 2024 ... Getting elevation data from contour lines · raster functions · contour. Z base from the DEM tif; contour interval of 1 · output is a raster ... Mar 15, 2019 ... Yeah, it's probably a bit blocked up - I've tried clearing it out but it doesn't make much of a difference. I've got a Garmin 820 which has ... Use the Lidar Finder to search lidar-derived elevation data by map, or select from all acquisitions in the data catalog table below. Lidar Finder. Vermont ... Lake Travis: 41.9% full as of 2025-05-03 · Historical Data · Most Recent Instantaneous Water Level · Additional Information · Lake Location. 30 m resolution elevation data. These data cover 99% of the land surface from 83° north latitude to 83° south latitude. A notably enhanced global elevation model named the GMTED2010 that replaces GTOPO30 as the elevation dataset of choice for global and continental scale ... The Ministry of Natural Resources' Ontario Elevation Mapping Program (OEMP) collects airborne light detection and ranging (lidar) data across Ontario.