Survey name | Type | Altitude | Spacing | Flight line distance |
---|---|---|---|---|
Hot Springs | M/R-D | 121.9 m | 4.80 km | 4,710 km |
New Castle | M/R-D | 121.9 m | 4.80 km | 4,763 km |
South Black Hills | M-A | 152.4 m above ground | 0.40 km | 2,574 km |
Black Hills | M-A | 2286 m (barometer) | 1.60 km | 1,971 km |
S.W. S. Dakota-E. Wyoming | M-D | 152.4 m above ground | 1.00 km | 10,581 km |
S. South Dakota | M-Dz | 1311 m (barometer) | 1.60 km | 28,689 km |