https://dem.ri.gov/
DEM is a state agency that protects, restores, and promotes the environment in Rhode Island. It offers online services, data and maps, permits and licenses, events and news, and more.

https://www.usgs.gov/faqs/what-digital-elevation-model-dem
A Digital Elevation Model (DEM) is a representation of the bare ground (bare earth) topographic surface of the Earth excluding trees, buildings, and any other surface objects. DEMs are created from a variety of sources. USGS DEMs used to be derived primarily from topographic maps. Those are being systematically replaced with DEMs derived from high-resolution lidar and IfSAR (Alaska only) data.

https://en.wikipedia.org/wiki/Digital_elevation_model
A digital elevation model ( DEM) or digital surface model ( DSM) is a 3D computer graphics representation of elevation data to represent terrain or overlaying objects, commonly of a planet, moon, or asteroid. A "global DEM" refers to a discrete global grid. DEMs are used often in geographic information systems (GIS), and are the most common

https://www.earthdata.nasa.gov/topics/land-surface/topography/terrain-elevation/digital-elevation-terrain-model-dem
DEM stands for digital elevation/terrain model, a 3D representation of a terrain's surface created from terrain elevation data. Learn more about DEM data sources, uses, and examples from Earthdata, a NASA program for managing Earth science data.

https://apps.nationalmap.gov/3depdem/
This web application was developed to display USGS DEM data from the USGS 3D Elevation Program (3DEP).

https://gisgeography.com/free-global-dem-data-sources/
Learn about five free digital elevation model (DEM) data sources from space and airborne sensors, covering Earth and Mars. Find out how to download, access, and use DEM data for geospatial analysis and visualization.

https://www.usgs.gov/landsat-missions/landsat-collection-2-digital-elevation-model
Learn about the different digital elevation model (DEM) sources used in Landsat Collection 2 data processing, such as GLS, RAMP, and GEOID. Find out how to download and access the DEM data from EarthExplorer.

https://gisgeography.com/dem-dsm-dtm-differences/
Learn the differences between DEM, DSM and DTM, three types of GIS elevation models. DEM is bare-earth raster grid, DSM captures natural and built features, and DTM is vector data set with contours and points.

https://www.l3harris.com/newsroom/editorial/2019/01/digital-elevation-models-explained-part-1-what-are-dems-dtms-and-dsms
Learn what DEMs, DTMs, and DSMs are and how they differ in data collection and processing technologies. Find out the applications and advantages of each type of elevation model for various end use scenarios.

https://www.usgs.gov/faqs/what-difference-between-lidar-data-and-digital-elevation-model-dem
Lidar data are 3D points from laser reflections, while DEM is a bare-earth model of elevation. Learn how DEM can be derived from lidar and other sources, and how to access them from USGS.

https://www.e-education.psu.edu/natureofgeoinfo/c7_p8.html
Learn about the characteristics, data quality, spatial reference, and distribution of USGS DEMs, which are raster representations of terrain surfaces. Download and explore DEM data with Global Mapper software.

https://www.ncei.noaa.gov/products/coastal-elevation-models
Coastal digital elevation models (DEMs) are used for coastal process modeling, ecosystem management, hazard mitigation, and more. Access various formats and file structures of DEM data for different regions using interactive map or direct links.

https://equatorstudios.com/what-is-a-digital-elevation-model-dem/
Learn what a DEM is, how it represents elevation data, and what file formats it uses. Find out how to access and download high-quality DEMs for various applications with Equator Studios software.

https://www.caliper.com/glossary/what-is-a-digital-elevation-model-dem.htm
A Digital Elevation Model (DEM) is a specialized database that represents the relief of a surface between points of known elevation. By interpolating known elevation data from sources such as ground surveys and photogrammetric data capture, a rectangular digital elevation model grid can be created. GIS software can use digital elevation models

https://www.youtube.com/watch?v=fvzNkdmoy48
A Digital Elevation Model, or DEM, is a 3D representation of a topographic surface of the Earth, excluding trees, buildings, and any other surface objects. I

https://pro.arcgis.com/en/pro-app/latest/tool-reference/spatial-analyst/exploring-digital-elevation-models.htm
Learn how to use DEMs, raster representations of the earth's surface, for hydrologic analysis. Find out how to remove sinks, peaks, and striping errors from DEMs.

https://www.democraticunderground.com/index.php
CPI, a broad inflation gauge that measures a basket of goods and services costs across the U.S. economy, held flat on the month though it increased 3.3% from a year ago, according to the department's Bureau of Labor Statistics. Economists surveyed by Dow Jones had been looking for a 0.1% monthly gain and a 3.4% annual rate.

https://up42.com/blog/everything-you-need-to-know-about-digital-elevation-models-dem-digital
Learn about different types of digital elevation data that represent the Earth's surface and its features. Find out how they are captured, used, and compared with examples and sources.

https://www.mdpi.com/2072-4292/13/18/3581
A paper that explains the concepts and terminology of digital elevation models (DEMs) and their applications in various disciplines. It covers the characteristics, sources, and types of DEMs, as well as the methods and algorithms for calculating morphometric variables.

https://www.sciencedirect.com/topics/earth-and-planetary-sciences/digital-elevation-model
Learn about digital elevation models (DEMs), their generation, accuracy, filtering, and uses in soil science and geology. Explore chapters and articles from ScienceDirect Topics on DEMs and related topics.

https://rgis.unm.edu/dem_analysis/
The DEM elevation values can be used for this, but another option is to reclassify the map and give each class a certain value that is used in a function. This can easily be displayed in a model, which can also be made in ArcMap (fig. 4). A good example is the Revised Universal Soil Loss Equation (RUSLE). This equation can be calculated by

https://www.opendem.info/
More high resolution datasets were added to the OpenDemSearcher. As part of the implementation of the EU Open Data Directive, geodata should be made available as "open data" in all federal states of Germany from mid-2024. Saarland (Germany) DTM with 1 m resolution. Baden-Wuerttemberg (Germany) DTM with 1 m resolution. Rhineland-Palatinate