| Survey type |
M-Dz (magnetic; digitized from contour maps) |
| Flown by |
U.S. Geological Survey |
| Date flown |
09/63-10/63 |
| Line spacing |
1.6 (km)
|
| Altitude |
304.8 (m) above ground
|
| Total distance |
13,759 (km)
|
| References |
|
| Counties |
Allamakee - Howard - Kossuth - Mitchell - Winnebago - Winneshiek - Worth - Blue Earth - Dakota - Dodge - Faribault - Fillmore - Freeborn - Goodhue - Houston - Le Sueur - Mower - Nicollet - Olmsted - Rice - Scott - Sibley - Steele - Wabasha - Waseca - Winona - Buffalo - La Crosse - Pepin - Pierce - Trempealeau - Vernon
|
| Overlapping surveys |
|
