| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what levees broke in katrina | 0.88 | 0.3 | 5566 | 63 |
| how many levees broke in katrina | 1.63 | 0.2 | 2269 | 89 |
| hurricane katrina levees broke | 0.1 | 0.9 | 7747 | 72 |
| which levees broke during katrina | 1.06 | 0.1 | 9592 | 17 |
| katrina levees broke | 1.51 | 0.5 | 5713 | 95 |
| why did the levees fail in katrina | 0.51 | 0.1 | 6893 | 11 |
| hurricane katrina broken levees | 1.15 | 0.1 | 9325 | 21 |
| hurricane katrina levees break | 1.78 | 0.3 | 6719 | 34 |
| how many levees failed during katrina | 0.68 | 0.9 | 8951 | 42 |
| hurricane katrina levees failure | 1 | 0.2 | 6385 | 97 |
| hurricane katrina and levees | 0.91 | 1 | 4602 | 37 |
| levee failure hurricane katrina | 1.68 | 0.5 | 2452 | 87 |
| hurricane katrina levee breaking footage | 0.66 | 0.9 | 4389 | 1 |
| hurricane katrina and the new orleans levees | 1.38 | 1 | 4124 | 17 |
| new orleans levee katrina | 1.26 | 0.8 | 7442 | 35 |
| levee system hurricane katrina | 0.21 | 0.1 | 3203 | 80 |
| levees broke in new orleans | 1.32 | 0.3 | 2166 | 66 |
| when the levees broke in louisiana | 0.72 | 0.6 | 4961 | 5 |
| levees breaking in new orleans | 1.27 | 0.9 | 1060 | 63 |
| what happened when the levee broke | 1.17 | 0.3 | 1779 | 51 |
| broken levees new orleans | 1.68 | 0.2 | 4881 | 36 |
| how did the levees break during katrina | 1.12 | 0.5 | 7396 | 49 |
