Sun shading (lidar)

Adjust simulated sun direction on the lidar hillshade. Azimuth = compass bearing of the light (0° north, 90° east). Altitude = height above the horizon (low = long shadows).

Historical map overlays

USGS scanned historical topographic maps. Enable an overlay and adjust its opacity. Works in 2D and 3D.

Sun azimuth: 315°   Sun altitude: 45°   Z factor: 1   Lidar opacity: 1
center: —   mouse: —   zoom:

Portage Riverboat One Hundred Thousand

Lost Treasure WI • Columbia County County
Description
Portage legend of a riverboat carrying one hundred thousand dollars sinking just south of town — three gold bars reportedly found so far.
Historical Notes
Portage lies at the Wisconsin River portage between the Fox and Wisconsin rivers in Columbia County. Compiled guides describe a riverboat with one hundred thousand dollars in cargo sinking south of Portage. Searchers have reportedly recovered three gold bars, with the bulk of the wreck treasure still sought.
Status / Verification legend — Legendary or approximate

Take Add Data / Take Notes

Log in or create an account to save private field notes for this location. Your notes are only visible to you.

Forgot password?

Enter your email and we'll send you a link to reset your password.

Back to log in