| for the health of riverine ecosystems | 8 | purpose |
| absolutely | 3 | degree |
| to salvation | 2 | purpose |
| flood → be → important | 14 |
| flood → be → essential | 9 |
| flood → be → vital | 4 |
| flood → be → crucial | 3 |
| negative | neutral | positive |
| 0.179 | 0.568 | 0.253 |
| Raw frequency | 30 |
| Normalized frequency | 0.554 |
| Modifier score | 0.500 |
| Perplexity | 453.063 |