Lock 30, MD
Interactive topo map of Lock 30, MD
| Place Name: | Lock 30 |
| Feature Class: | Dam |
| US State: | MD |
| County: | Frederick |
| Latitude: | 39.31 |
| Longitude: | -77.62 |
| Elevation (meters): | 74 m |
| Elevation (feet): | 242′ |
| USGS Quad: | Harpers Ferry topo map |
| 7.5´ topo: |  |
| State topo index: | MD topo index |
| Alternate map versions: | MD topographic maps Editions by year, direct download as GeoPDF. |
| 30´ x 60´ topo: | 1:100,000 scale map |
| 1° x 2° topo: | 1:250,000 scale map |