WMH Gold Discovery Topo Maps are high-resolution map images that are based off of Forest Service quad maps. USGS mine data for both gold and non-gold mines has been plotted on the maps and BLM mining claim data has been located by PLSS section.
Note: There is a full topo map sample for download at the bottom of this page.
The maps are ultra-high resolution PNG files that are generally 20-30 megabytes in file size with dimensions over 10,000 pixels. The following example coverage map for Josephine, County Oregon demonstrates both the coverage area and size of each map in the package.
The USGS mine data has been edited to remove the many duplicate mine records that make mapping MRDS data problematic. Mines with obviously bad coordinates have also been removed.
Mines are divided into two types – those that have gold listed as a primary commodity, and those that do not. (note that the non-gold mines may have gold listed as a secondary commodity in the USGS database). Gold mines are located with red dots, non-gold mines with green dots.
Researching Mining Claims
The blue claim numbers start with a reference number and then list the number of lode and/or placer claims in that PLSS section. As an example “7-L10” means that there are 10 lode claims in that section, and the reference number is 7.
The reference number corresponds to a row number in a file distributed with the Gold Discovery Topo maps that contain the full MTRS value for that section. In the case of the “7-L10” value, the MTRS is “33 0330S 0050W 022”. This MTRS value can be copied and pasted right into the LR2000 search form, eliminating several cumbersome steps and removing the guesswork from locating claims in particular sections.
The WMH Gold Discovery Topo Maps include a six-page guide on how to use the included claim data to research mining claims on the Bureau of Land Management’s LR2000 application.
Maps For Print
The WMH Gold Discovery Topo Maps are ultra-high resolution png images (the sample download map at the bottom of this page is 21 megabytes and 14,173 x 14,173 pixels in dimension). These images are intended to be opened in image viewers or image editors on desktop computers or appropriate devices with larger screens.
We recommend making copies of the original images and editing the copies as needed in an image editor. Areas of interest can be cropped out and printed, or reduced in size for better performance on smart phones or smaller devices.
The WMH Gold Discovery Topo Map archives contain the following files:
- Map coverage JPG image that shows the geographic locations of each map in the archive
- Numbered high-resolution PNG map images
- Claim research guide
- Claims data file to assist in claims research
Sample Map Download
The following file is a full WMH Gold Discovery Topo Map file from the Josephine County, Oregon package. The file is 27 megabytes file size and 14,881 x 14,881 pixels in dimenstion.
Available Map Packages
New map packages for additional geographic areas will be added on a regular basis. The currently available WMH Gold Discovery Topo Maps are listed here.
Note: many of the map packages can be purchased as a discounted bundle with the corresponding WMH Mine Discovery Tools for Google Earth Pro.