| Survey type | M-D (magnetic; collected in digital form) |
|---|---|
| Flown by | U.S. Geological Survey |
| Date flown | ?/84-?/91 |
| Line spacing | 0.38 (km) |
| Altitude | 91 (m) above ground |
| Total distance | 60,000 (km) |
| Counties | Beltrami - Clearwater - Itasca - Koochiching - Lake of the Woods - Marshall - Pennington - Polk - Roseau - Saint Louis |
| Overlapping surveys |
| Download | magnetics.htm |
|---|