USGS Topo maps : r/Backcountry - Reddit
2020年7月30日 · Cool. This company prints quads for $17 ea (24"x29") on waterproof paper. You can get the latest (or almost) quads or make a custom map from the same USGS quad data, so you're not stuck with the maps' boundaries, and you can zoom out to 50k so fit 4 quads worth of map on one sheet.
Creating 30-meter DEM from USGS 15-minute topo maps in QGis …
2021年11月7日 · Today, these topographic maps in question (Spirit Lake, Cougar, Elk Rock, Mount St. Helens and Toutle) are freely downloadable from the USGS National Map's TopoView web utility. I have subsequently downloaded all five of those maps, and thankful for being pre-georeferenced, they loaded with ease in QGis without any conflict to the pre-eruption DEM.
Topo Maps : r/Ultralight - Reddit
As an old person, we used to purchase paper USGS topo maps but they were super frustrating because a portion of your trail was always on another map so you would have to buy another map just to get a little segment of your trail. And a lot of the maps are really old.
Download almost all USGS topo maps for free. : …
2015年10月15日 · I only know that CalTopo uses USGS maps. These are very often quite old. Especially for urban areas. The USGS is more likely to update wilderness areas first. If you scroll away from your town and into the woods - can you tell if they are more 'up-to-date'? If you want more details - go into OP's link and find the maps of your area.
I'm looking for the best source of free topographic maps. Can …
For downloading USA topo maps I primarily use the USGS 'National Map Downloader': https://viewer.nationalmap.gov/basic/ You can also use the USGS 'Earth Explorer' to browse other georeferenced data like aerial imagery, digital elevation models (DEMs), satellite imagery, hyperspectral scans, etc: https://earthexplorer.usgs.gov/
Is there a way to get/make topo maps in Google Earth? : r/gis
A USGS topo can be opened in GIMP, and with a bit of work, stripped of its borders and converted to a TIFF or JPG that can then be used with GEs image overlay feature. Then if desired adjust the Elevation Exaggeration to suit your visual …
Question about USGS Topo Maps and CalTopo Map Sources
2024年4月25日 · Question about USGS Topo Maps and CalTopo Map Sources Recently, I discovered that you can import custom map sources to add as base layers to CalTopo. I wanted to add the USGS topological maps that are located here , and the only way I've made it work was to use their "USGS Topo Base Map - Primary Tile Cache" API as my custom map source: …
Printing USGS 7.5 Minute Topo Maps Without Hillshade
2023年2月21日 · Maybe the USGS map is available as web service as well? Meaning as an WMS or ArcGIS API that you can load into a geodata program like QGIS. From there you can create you own maps. Unfortunately, both things are rather advanced for a non-techy person. I'm sorry but welcome to the digital age.
Discrepancy between USGS topo map and DEM data? : r/gis - Reddit
2023年1月30日 · The resolution of your DEM map can potentially lead to enormous differences in elevations compared to topo maps. Topo maps often have a bunch of known datum points on them, but a DEM map doesn't necessarily have that, and will interpolate values across the board, which can result in low elevation areas having too high of a value, and high areas ...
Buying paper topo maps : r/WildernessBackpacking - Reddit
2016年7月19日 · I also find that paper maps are much easier for trip planning than any software I've tried. REI and a few other sporting goods/outdoor stores around me sell some topo maps and the local Green Trails maps which are great. If you're lucky enough to have access to a large-format printer, the FSTopo maps are free.