| Protection zones | Values in m | Villages | Effective speed in m/day |
| Nearest | 113 - 125 | Kamna, Toukouop, Sanki, Bangoulap, Bahouoc and Bamena | 12.24 |
| Closest | 125 - 624 | Lah-Gwi and Batchingou | 11.33 |
| Farthest | 624 - 1123 | Bandiangseu | 12.48 |