The 3dep data holdings serve as the elevation layer of the national map, and provide foundational elevation information for earth. Free satellite data, satellite imagery, digital elevation models dems, topographic maps and free software links. Please see the linked pdf files for further documentation. The data can be configured as a dem and used for all profile and background generation or it can be used in conjunction with a bare earth dem such as ned data in gridfloat format as a clutter database. Any download policies of the respective mirrors apply. This interface attempts to ease the pain of downloading 30meter resolution elevation data from the shuttle radar topography mission click on yellow tiles to download their corresponding data tiles come as zipped srtmhgt files at 1arcsecond resolution 3601x3601 pixels in a latitudelongitude projection, downloaded from nasa servers.
Shuttle radar topographic mission srtm digital surface model dsm. This makes the file size several times larger than a well. Usgs hill shade base map service from the national map. Click on the explore button to download the required letterblock. The canadian digital elevation model cdem is part of natural resources canada s altimetry system designed to better meet the users needs for elevation data and products. Space shuttle radar topography mission several srtm data versions and products are available. The 1 files cover north america canada, usa and mexico. Free digital elevation model dem and free satellite data. Srtm data, in hgt format, can be downloaded from here, but for some. For best results, patching should not be used as a substitute for downloading.
Spatial and numeric data services guide to gis data available at the university of. These files are available for download in both arcinfo ascii format, and as. The canadian digital surface model cdsm is part of natural resources canada s altimetry system designed to better meet the users needs for elevation data and products. Topographic maps show the location, height, and shape of features like mountains and valleys, rivers, even the craters on volcanoes. Mrlc multi resolution land characteristics for ned and nlcd data in bil format.
The shuttle radar topography mission srtm wikipedia article is a nasa mission conducted in 2000 to obtain elevation data for most of the world. Shuttle radar topography mission 1arc second global. To collect the 3d data, engineers added a 60meterlong 200foot mast, installed additional cband and xband antennas, and improved tracking and navigation devices. Click on the srtm30 tile to download the digital elevation map dem from the place you select. The dem data on this site are version 3 of the csisrtm data with included improved clipping of shorelines using the srtm water bodies data swbd, and improved interpolation of voids areas using high resolution auxiliary data for us, canada, mexico, europe, australia, new zealand and gtopo30 global topographic data for other areas. Natural earth features 7 types of raster files at 1. Dems gis resources library at university of calgary. Users should be aware that these data are intended for use with a geographic information system gis or other special application software, and are not directly viewable in a browser. Shuttle radar topography mission srtm data products and non published srtm. Elevation data used in this image were acquired by the shuttle radar.
The dem data are provided in motorola or ieee byte order, which stores the most signi. In these data, the elevations are captured at the top of buildings, trees. The shuttle radar topography mission was designed to collect threedimensional measurements of the earths surface. The raster files register precisely with the 10m vector data. But heres a usgs earth explorer download guide to help you get started. There is a new, 30 meters resolution srtm dtm coming out. It includes a digital terrain model dtm, a digital surface model dsm and other derived data. Ned data in gridfloat format very convenient ftp access to ned data in gridfloat format. The data extraction tool allows the extraction and download of raster. Canadian digital elevation model, 19452011 this collection is a legacy product that is no longer supported. The dem data on this site are version 3 of the csisrtm data with included. By early 2004, 3 data for north america, south america, eurasia, africa, australia, and islands was available.
Shuttle radar topography mission srtm data have been enhanced to fill areas of missing data void filled to provide more complete digital elevation data with a resolution of 1 arcsecond 30 meters and 3 arcseconds 90 meters for global coverage. Plugin for blender written in python, used to import srtm shuttle radar topography mission data as a mesh. Toronto, canada elevation map is displayed at different zoom. The relative accuracy of canadian digital elevation data of mount carleton was assessed using shuttle radar topographic mission srtm model and profilespoints from geoscience laser altimeter system glas onboard icesat.
I read about the new version of the digital elevation model at 30 meters srtm 30 meters, but i can not find from were i can download it. Usgs hill shade base map service from the national map data. The national aeronautics and space administration nasa and the national geospatialintelligence agency nga participated in an international project to acquire radar data which were used to create the first nearglobal set of land elevations. Atlas of canada nrcan free data, including boundaries, transportation networks. The solution for le would be a manual download of srtm data and osm data, followed by off line procesding with maperitive. Land topography allows us to make maps of the features of the surface of the earth. There are 2 ways that srtm data can be used with pathloss 5. If you want to download srtm data, those data are available at the us geological surveys eros data center for download. The usgs shaded relief base map service from the national map was created with data from the 3d elevation program 3dep for large and medium scales 1. Digital elevation models mcgill library mcgill university. I recommend the alospalsar dem which is as fine as 12. Usgs and is available for download from the national map seamless data distribution.
Usgs ascii dem format is not particularly good as a data format because it is ascii. This is a commonly used format that can be directly used in arcanything, divagis, and many other programs. The difference in elevation, when compared to a bare earth dem is assigned to the. High resolution digital elevation model hrdem canelevation series the product high resolution digital elevation model hrdem is part of the canelevation series created in support to the national elevation strategy implemented by nrcan.
Public terrain data free of charge fetchsrtm download tool for finding and downloading srtm, ned and nlcd terrain data. Digital elevation data with srtm voids filled using accurate. Jplnasa version 1 srtm nonvoid filled, unedited elevation data us. As stated on the nasa jpl official page, the next release is planned for later in 2014, and it is expected to include all of south america plus north. Download and clip a portion of the srtm 30m dem giving bounding box as wgs84 coordinates. This data is the trim dem converted to the canadian digital elevation data cded format which is available from the bc geographic data catalogue.
Fetchsrtm download tool for finding and downloading srtm, ned and nlcd terrain data. It is the current dataset of choice for digital elevation model dem data since it has a fairly high resolution 1 arcsecond, or around 25 meters, has nearglobal coverage from 56s to 60n, and is in the public domain. Try development seed or linfiniti or this cheat sheet for some help on doing nice things with this data using gdal the files linked here are version 4. The shuttle radar topography mission srtm was flown aboard the space shuttle endeavour february 1122, 2000. Laz in cloud when exporting lidar data urls to text from the cart the user can specify whether to include files in laz only, las only or both formats if both types are present in the cart. An overview of the different versions is given in figure 2 in the srtm user guide. Data is available in dem format which is supported by a variety of software including.
Canadian digital surface model, 2000 open government portal. Srtm 90 digital elevation data, distributed in 5 degree by 5 degree tiles. Under the data sets tab, select digital elevation srtm srtm 1arcsecond global. The srtm digital elevation data, produced by nasa originally, is a major. The elevation map of toronto, canada is generated using elevation data from nasas 90m resolution srtm data.
Canadian digital elevation data level 1derived from 1. The shuttle radar topography mission srtm water body data files are a. Opendem the portal for sharing free digital elevation models and xyz height datasets. Digital elevation model province of british columbia. You can use programs such as 7zip, pkzip or stuffit to decompress the files. This interface attempts to ease the pain of downloading 30meter resolution elevation data from the shuttle radar topography mission click on yellow tiles to download their corresponding data tiles come as zipped srtmhgt files at 1arcsecond resolution 3601x3601 pixels in a latitudelongitude projection, downloaded from nasa.
May 6, 2020 this is a tiled collection of the 3d elevation program 3dep and is one meter resolution. The maps also provides idea of topography and contour of toronto, canada. Usgs eros archive digital elevation shuttle radar topography. The data is published for download here, but its sliced into thousands of small files, and i dont see an ftp option for more efficient downloading. Elevation of toronto,canada elevation map, topography, contour. The proxy settings have been set, that allows display of the map, but alternative request are blocked those for srtm data download. Topographic data of canada canvec series is a digital cartographic. We would like to show you a description here but the site wont allow us. Shuttle radar topography mission data of the united states.
Two versions of the 10 millionscale raster data are offered. The cded dem has been used for many types of studies and projects mostly in canada. Earn 10 reputation in order to answer this question. Each tile comes in geotiff format at 90meter resolution 6000x6000 pixels, from various mirrors ive found on the web. The data consists of an ordered array of ground or reflective surface elevations, recorded in metres, at regularly spaced intervals. Each shapefile consist of at least three actual files. See the section below for a 2014 update srtm shuttle radar topography mission, a joint project between the nima and nasa to produce digital topographic data for 80% of the earths land surface all land areas between 60. An assessment of the srtm topographic products, technical.
Shuttle radar topography mission srtm data products and non published srtm canada. The files have been compressed and grouped in zip files. Another way to think of topographic maps is that they are a picture of the threedimensional 3d structure of the surface of. The canadian digital elevation data is produced by natural resources canada. May 24, 2019 the usgs shaded relief base map service from the national map was created with data from the 3d elevation program 3dep for large and medium scales 1.
Enhanced datasets for mountain areas by panorama viewfinders. This data is provided in an effort to promote the use of geospatial science and applications for sustainable development and resource conservation in the developing world. The srtm digital elevation data provided on this site has been processed to fill data voids and to facilitate its ease of use by a wide group of potential users. An overview of the different versions is given in figure 2 in the srtm user guide jplnasa version 1 srtm nonvoid filled, unedited elevation data us. The shuttle radar topography mission srtm carried out in february 2000 has provided near global topographic data that has been widely used in many fields of earth sciences. Canadian digital elevation data mcgill library mcgill. This interface attempts to ease the pain of downloading 30meter resolution elevation data from the shuttle radar topography mission click on yellow tiles to download their corresponding data. Below is the elevation map of toronto, canada, which displays range of elevation with different colours. Hamilton, ontario, canada western lake ontario tile. I would like to add that the srtm dem is originally 90m 3 arc sec data.
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