| Survey type | M-Dz (magnetic; digitized from contour maps) |
|---|---|
| Flown by | U.S. Geological Survey |
| Date flown | 06/58 |
| Line spacing | 0.8 (km) |
| Altitude | 670 (m) by barometer measurement |
| Total distance | 7,422 (km) |
| References | |
| Counties | Cheshire - Grafton - Hillsborough - Merrimack - Sullivan - Orange - Windham - Windsor |
| Overlapping surveys |
| Metadata | Questions & Answers - Outline - Parseable text - XML |
|---|---|
| Download | NH0308.zip |
