| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| usgs historic map viewer | 0.5 | 0.8 | 3269 | 3 | 24 |
| usgs | 0.34 | 0.5 | 9011 | 18 | 4 |
| historic | 1.28 | 0.5 | 9089 | 79 | 8 |
| map | 0.58 | 0.2 | 1113 | 85 | 3 |
| viewer | 0.36 | 0.9 | 2902 | 76 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| usgs historic map viewer | 0.5 | 0.1 | 5538 | 51 |
| usgs historic topo map viewer | 0.34 | 0.4 | 7124 | 51 |
| usgs historical topographic maps viewer | 1.52 | 0.4 | 9270 | 49 |
| usgs historic maps online | 0.88 | 0.4 | 4015 | 50 |
| usgs geological map viewer | 0.07 | 0.3 | 6674 | 51 |
| usgs national map viewer | 0.3 | 0.3 | 8658 | 31 |
| usgs geologic map viewer | 1.06 | 0.6 | 375 | 91 |
| usgs map viewer geology | 0.74 | 0.3 | 6919 | 84 |
| usgs online map viewer | 1.78 | 0.4 | 6681 | 37 |
| usgs historic topo viewer | 1.76 | 0.3 | 4068 | 59 |
| usgs interactive map viewer | 1.67 | 0.6 | 7527 | 38 |
| usgs historical maps online | 1.01 | 0.8 | 4270 | 27 |
| usgs historical map explorer | 1.57 | 0.3 | 2747 | 18 |
| usgs survey map viewer | 1.46 | 0.5 | 8421 | 48 |
| usgs historical topo viewer | 0.17 | 0.9 | 1683 | 95 |
