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Welcome to TopoQuest!
TopoQuest is your ultimate resource for USGS topographic map viewing, and free downloads of
USGS DRG (GeoTIFF) digital map files. If you're into hiking, camping, fishing,
prospecting or just a GIS enthusiast, TopoQuest has the USGS topographic maps you need
available for online viewing.
Are you bummed that TopoZone has been bought by Trails.com and no longer has the level of free
map viewing you crave? No problem, TopoQuest is an excellent replacement with
all of the same features!
We're working on rounding up all the DRG topographic map
data covering the entire United States. It's our belief that these digital map files should
be freely available to anyone that wants them (note: USGS topographic maps and DRG's are public
domain and have no copyright, and are free to distribute as anyone wishes).
Want to browse around topographic maps for your area? Visit our Map
Viewer. Want to search for, download or view a particular topographic map? Visit our
Find Maps page. Want to search for a populated place, geographic landmark, manmade
object or other place or feature? Try our Find Places page. Looking for more info on DRG files, their format, and software you can use to view them? Check out our
Resources & Links page.
Current Status of Online Topographic Map Viewer Coverage:
Areas shown shaded in dark green are available for viewing in the Map Viewer.
| State |
|
Online Viewer Status |
|
DRG Downloads |
| Alabama | | Most Maps | | Available |
| Alaska | | No Data | | Available |
| Arizona | | Most Maps | | Available |
| Arkansas | | Most Maps | | Available |
| California | | Most Maps | | Available |
| Colorado | | Most Maps | | Available |
| Connecticut | | Partial | | Available |
| Delaware | | Partial | | Available |
| Florida | | Partial | | Available |
| Georgia | | Most Maps | | Available |
| Hawaii | | Partial | | Available |
| Idaho | | Most Maps | | Available |
| Illinois | | Most Maps | | Available |
| Indiana | | Most Maps | | Available |
| Iowa | | Most Maps | | Available |
| Kansas | | Most Maps | | Available |
| Kentucky | | Most Maps | | Available |
| Louisiana | | Most Maps | | Available |
| Maine | | Most Maps | | Available |
| Maryland | | Most Maps | | Available |
| Massachusetts | | No Data | | Available |
| Michigan | | Most Maps | | Available |
| Minnesota | | Partial | | Available |
| Mississippi | | Most Maps | | Available |
| Missouri | | Most Maps | | Available |
| Montana | | Most Maps | | Available |
| Nebraska | | Most Maps | | Available |
| Nevada | | Most Maps | | Available |
| New Hampshire | | Partial | | Available |
| New Jersey | | Partial | | Available |
| New Mexico | | Most Maps | | Available |
| New York | | Partial | | Available |
| North Carolina | | Most Maps | | Available |
| North Dakota | | Most Maps | | Available |
| Oklahoma | | Most Maps | | Available |
| Ohio | | Most Maps | | Available |
| Oregon | | Most Maps | | Available |
| Pennsylvania | | Most Maps | | Available |
| Rhode Island | | Partial | | Available |
| South Carolina | | Most Maps | | Available |
| South Dakota | | Most Maps | | Available |
| Tennessee | | Most Maps | | Available |
| Texas | | Most Maps | | Available |
| Utah | | Most Maps | | Available |
| Vermont | | Most Maps | | Available |
| Virginia | | Partial | | Available |
| Washington | | Most Maps | | Available |
| West Virginia | | Most Maps | | Available |
| Wisconsin | | Most Maps | | Available |
| Wyoming | | Most Maps | | Available |
To download a USGS topographic map in DRG GeoTIFF form, visit our Find Maps page to
find and download the map you need. Many of the DRG downloads are links to the DRG
map archive at www.archive.org. The www.archive.org
collection of DRG's lacks any sort of useful search tool to find the map you need, but TopoQuest
has a searchable database of all DRG's to help you find your map quickly!
We're working on acquiring and integrating topographic map data to fill out
the above areas in our online Map Viewer. We're starting
in the Pacific Northwest, and moving onward from there. Why don't we have
more topographic map data up yet? The total set of DRG's for the United States
is pretty massive in size, and takes a long time to collect and process. Please
be patient, it takes a lot of processing and data preparation to add each new set of
maps!
Copyright (C) 2008 Ryan Niemi ... All Rights Reserved