The difference in elevation, when compared to a bare earth dem is assigned to the. Another way to think of topographic maps is that they are a picture of the threedimensional 3d structure of the surface of. The srtm digital elevation data, produced by nasa originally, is a major. The cded dem has been used for many types of studies and projects mostly in canada. Under the data sets tab, select digital elevation srtm srtm 1arcsecond global. Below is the elevation map of toronto, canada, which displays range of elevation with different colours. I would like to add that the srtm dem is originally 90m 3 arc sec data. The shuttle radar topography mission was designed to collect threedimensional measurements of the earths surface. There is a new, 30 meters resolution srtm dtm coming out. The solution for le would be a manual download of srtm data and osm data, followed by off line procesding with maperitive. Shuttle radar topographic mission srtm digital surface model dsm. Download and clip a portion of the srtm 30m dem giving bounding box as wgs84 coordinates. Opendem the portal for sharing free digital elevation models and xyz height datasets. For best results, patching should not be used as a substitute for downloading.
The dem data on this site are version 3 of the csisrtm data with included. The canadian digital elevation data is produced by natural resources canada. Atlas of canada nrcan free data, including boundaries, transportation networks. Land topography allows us to make maps of the features of the surface of the earth. Each tile comes in geotiff format at 90meter resolution 6000x6000 pixels, from various mirrors ive found on the web. Usgs eros archive digital elevation shuttle radar topography. 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. Please see the linked pdf files for further documentation. Shuttle radar topography mission srtm data products and non published srtm canada. But heres a usgs earth explorer download guide to help you get started. Spatial and numeric data services guide to gis data available at the university of.
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. Jplnasa version 1 srtm nonvoid filled, unedited elevation data us. 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. By early 2004, 3 data for north america, south america, eurasia, africa, australia, and islands was available. 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. 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. Earn 10 reputation in order to answer this question. The raster files register precisely with the 10m vector data. 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. The 3dep data holdings serve as the elevation layer of the national map, and provide foundational elevation information for earth. Elevation data used in this image were acquired by the shuttle radar. The 1 files cover north america canada, usa and mexico.
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. 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. 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. The shuttle radar topography mission srtm water body data files are a. Usgs hill shade base map service from the national map. Toronto, canada elevation map is displayed at different zoom. I recommend the alospalsar dem which is as fine as 12. Click on the explore button to download the required letterblock.
Digital elevation model province of british columbia. 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. 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. Topographic data of canada canvec series is a digital cartographic. Click on the srtm30 tile to download the digital elevation map dem from the place you select. The shuttle radar topography mission srtm was flown aboard the space shuttle endeavour february 1122, 2000. To collect the 3d data, engineers added a 60meterlong 200foot mast, installed additional cband and xband antennas, and improved tracking and navigation devices.
We would like to show you a description here but the site wont allow us. 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. Ned data in gridfloat format very convenient ftp access to ned data in gridfloat format. This is a commonly used format that can be directly used in arcanything, divagis, and many other programs. An assessment of the srtm topographic products, technical. Topographic maps show the location, height, and shape of features like mountains and valleys, rivers, even the craters on volcanoes.
The proxy settings have been set, that allows display of the map, but alternative request are blocked those for srtm data download. Canadian digital elevation data mcgill library mcgill. 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. Canadian digital elevation data level 1derived from 1. 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. Hamilton, ontario, canada western lake ontario tile. 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. This data is the trim dem converted to the canadian digital elevation data cded format which is available from the bc geographic data catalogue. In these data, the elevations are captured at the top of buildings, trees. Mrlc multi resolution land characteristics for ned and nlcd data in bil format. Srtm data, in hgt format, can be downloaded from here, but for some.
An overview of the different versions is given in figure 2 in the srtm user guide. 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. Natural earth features 7 types of raster files at 1. Elevation of toronto,canada elevation map, topography, contour.
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. If you want to download srtm data, those data are available at the us geological surveys eros data center for download. Space shuttle radar topography mission several srtm data versions and products are available. You can use programs such as 7zip, pkzip or stuffit to decompress the files. Enhanced datasets for mountain areas by panorama viewfinders. Each shapefile consist of at least three actual files. The files have been compressed and grouped in zip files. Two versions of the 10 millionscale raster data are offered. These files are available for download in both arcinfo ascii format, and as.
The maps also provides idea of topography and contour of toronto, canada. Free digital elevation model dem and free satellite data. The data consists of an ordered array of ground or reflective surface elevations, recorded in metres, at regularly spaced intervals. There are 2 ways that srtm data can be used with pathloss 5. Srtm 90 digital elevation data, distributed in 5 degree by 5 degree tiles. Usgs and is available for download from the national map seamless data distribution.
Digital elevation data with srtm voids filled using accurate. 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. Data is available in dem format which is supported by a variety of software including. Free satellite data, satellite imagery, digital elevation models dems, topographic maps and free software links. Shuttle radar topography mission data of the united states. 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. May 6, 2020 this is a tiled collection of the 3d elevation program 3dep and is one meter resolution. Canadian digital surface model, 2000 open government portal. Digital elevation models mcgill library mcgill university. 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. 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. The shuttle radar topography mission srtm wikipedia article is a nasa mission conducted in 2000 to obtain elevation data for most of the world.
Plugin for blender written in python, used to import srtm shuttle radar topography mission data as a mesh. Usgs hill shade base map service from the national map data. Usgs ascii dem format is not particularly good as a data format because it is ascii. It includes a digital terrain model dtm, a digital surface model dsm and other derived data. Fetchsrtm download tool for finding and downloading srtm, ned and nlcd terrain data. Shuttle radar topography mission 1arc second global.
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. The dem data are provided in motorola or ieee byte order, which stores the most signi. 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. Shuttle radar topography mission srtm data products and non published srtm. This makes the file size several times larger than a well. Public terrain data free of charge fetchsrtm download tool for finding and downloading srtm, ned and nlcd terrain data. 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. The elevation map of toronto, canada is generated using elevation data from nasas 90m resolution srtm data. Canadian digital elevation model, 19452011 this collection is a legacy product that is no longer supported. Any download policies of the respective mirrors apply.