Stand on your spot, and the app draws a full legal claim around you on a map. Turn it and stretch it to fit, check it against claims on file and closed land, approve it, and it walks you to every post with your phone’s compass — with a sketch you can print and files you can load into a GPS. It is arithmetic, not a survey.
You’re signed in, but the claim layout tool — corner coordinates, the printable sketch and the GPS files — is part of the paid membership.
Your membership isn’t active right now, so the claim layout tool is paused. Reactivating your membership brings it back.
Become a memberNew to claims? Start with the Oregon Claims Guide — free to read.
Mark your discovery point or a corner, give the direction and the size, and get all four corners, a printable sketch, and files for your GPS. Sign in to use it.
Sign inNo account yet? You can create one on the sign-in page.
Stand where the claim starts and tap the GPS button. The app draws a full legal-size claim around you on a map: you turn it, stretch it and approve it, and then it walks you to every post.
Type the coordinates instead — for a spot you are not standing on, or numbers from a handheld GPS.
Drag the claim (or the round knob) to turn it around your spot. Drag a square handle to make it longer or wider — the acres stay the same and it never passes the legal limit.
Red is a claim on file or land closed to claiming, from the same map data as the atlas. It runs behind BLM’s own records and is not a title search: check MLRS and the county recorder before you post.
Mark the spot you are standing on, say which way the vein runs and how big the claim is, and the four corners are worked out from there. Corners are numbered C1 to C4 going around the boundary.
Calculated layout — not a survey
| Corner | Latitude | Longitude | Where it came from | Checked on the ground |
|---|
| From | To | Distance | True bearing | Heading |
|---|
Tap Start guiding. The arrow points to the next post and turns green when you are on it. Set the post, stand still, and tap the big button: the app records where it is and moves on to the next one. This needs the device’s GPS, not a phone signal.
Stand still on the spot when you mark it: the app averages 20 seconds of GPS readings first, which steadies a phone’s wander. Your corners were worked out from the GPS fix at your starting point, so they carry that fix’s error too — the claim’s size and shape come from your numbers, not from walking.
The bearing is from true north. A phone is often off by 15 feet or more, so the app only lets you mark a corner when the GPS says it is good to 30 feet or better and you are within its error (or 30 feet) of the corner, with a reading from the last few seconds. Marking a corner records that you stood there, how good the GPS said it was, and how far off it put you — it is not a survey.
Works with no signal. The points you mark, the time you posted the location notice and your work log are saved on this phone and sent to your account by themselves when you have signal. Nothing here signs or files anything — it is your record of what you did on the ground.
Location notice posted
Work log · proof of labor
Field note
Recorded on this phone
Nothing yet. Mark a spot with GPS, walk a corner, or save a posting time or a work log entry.
Photos are not part of the field record yet: they would fill a phone that also holds your offline maps.
The sketch pad below is what prints: two landscape pages, the sketch and then the corner schedule. In the print window choose Landscape and turn on Background graphics, or choose “Save as PDF”.
Files for your GPS and maps
Gold Monster Mining Network
Claim:
Prepared for:
State / county:
Claim type:
Area:
Location date:
Record / serial: To be entered
PLSS:
District:
Datum:
Source:
Method: Calculated ellipsoid offsets
Units: International feet
Confirm receiver datum before staking
Side lines:
End lines:
Long axis:
Width extends from anchor
GPS CORNERS
C2
C3
C4
GPS ENTRY (deg / min)
See page 2 for all four corners.
PRECISION NOTE
Coordinates are computed targets.
Extra digits are not survey accuracy.
Confirm monuments in the field.
Land status and existing claims have not been checked.
PLSS must be completed for filing.
Gold Monster Mining Network |
Corner coordinate schedule and staking geometry
| Corner | Latitude / longitude (decimal) | GPS format: degrees and decimal minutes |
|---|
Calculated layout – not a survey. Gold Monster provides document preparation assistance and educational information. It is not a law firm and does not provide legal advice. Filing requirements vary by jurisdiction — verify with the relevant agency.
The layout is the measuring. These are the steps after it.
Kept in this browser only. They are not in your account and do not follow you to another phone — download a file if you need to carry one.
This tool lays a rectangle on the ground from the numbers you give it. It does not check who owns the land, whether it is open to location, or whether somebody already holds a claim there, and it does not decide that a claim is valid. A corner is only as good as the GPS fix it started from — a phone is often off by 15 feet or more. When the exact line matters, hire a licensed surveyor. See the Oregon Claims Guide for what locating a claim involves.