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flood-control : 160 phrases in 20 subjects |
| Agriculture | 4 |
| Agrochemistry | 1 |
| Animal husbandry | 1 |
| Construction | 14 |
| Ecology | 17 |
| Economics | 6 |
| Electronics | 9 |
| Energy industry | 1 |
| Finances | 2 |
| General | 5 |
| Geography | 1 |
| Hydraulic engineering | 20 |
| Hydrology | 2 |
| Makarov | 13 |
| Military | 1 |
| Natural resourses and wildlife conservation | 7 |
| Nautical | 1 |
| Obsolete / dated | 1 |
| Technology | 45 |
| Water resources | 9 |