How are spot heights used on maps?

A fixed base elevation at a tide station to which all water level measurements are referred. ... The data can be displayed in either feet or meters. Click ... 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 ... Elevation Change. Spring, Fall. 2024, 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015 ... Groundwater Level Data Search. ❔. Keyword Search. DWR Region Office ... ... low), expected flood elevation and estimated flood depth near any property or structure within watersheds where Base Level Engineering has been prepared. Mar 26, 2025 ... High accuracy elevation data. Our National Elevation Programme provides LiDAR-based data for most of New Zealand. This open data is used in a ... Elevation data is a digital representation of the Earth's terrain. Data can be represented as points (x,y,z) or in a gridded format (raster). ... data from the Ice surface and Bedrock versions of ETOPO 2022. Launch Grid Extract. GeoTiff Format. 15 Arc-Second Resolution. Bedrock elevation geotiff · Bedrock ... A notably enhanced global elevation model named the GMTED2010 that replaces GTOPO30 as the elevation dataset of choice for global and continental scale ... Elevation Data for Floodplain Mapping ... Floodplain maps serve as the basis for determining whether homes or buildings require flood insurance under the National ... Jan 21, 2025 ... ... elevation information, the flood insurance rating engine may return a lower annual premium. FEMA's system compares the original elevation data ...