Table 2 Statistics for flood and drought disaster years in the Yellow River Basin of Henan Province
Century disaster | BC 1 | BC2 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | A/R | Avg. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Flood | 14 | 13 | 9 | 29 | 14 | 0 | 0 | 3 | 18 | 25 | 11 | 39 | 22 | 11 | 25 | 69 | 57 | 84 | 81 | 68 | 86 | 39 | 717 | 33.4 |
Drought | 7 | 0 | 29 | 42 | 16 | 3 | 1 | 3 | 7 | 7 | 17 | 50 | 60 | 13 | 35 | 49 | 30 | 72 | 79 | 56 | 63 | 33 | 672 | 32.3 |