| Study block | Hippopotamus population density/km | Primary production kg/ha−1 | Percent (%) relative of total |
| A | 53.8 | 12,744 | 21 |
| B | 54.04 | 16,336 | 25.0 |
| C | 22.46 | 5392 | 8.59 |
| D | 11.92 | 2864 | 4.56 |
| E | 38.42 | 7976 | 12.70 |
| F | 29.27 | 6408 | 10.20 |
| G | 19.92 | 4784 | 7.62 |
| H | 31.43 | 6296 | 10.03 |
| Total | 62,800 | ||
| Mean | 7850 | 99.7 |