| Roughness Length, L (m) | Landscape Type | Sampled Areas |
| 0.03 | Open agricultural areas and very scattered building | Maiduguri |
| 0.3 - 0.4 | Towns with agricultural, lands with very coarse and irregular terrain | Kano, Jos and Enugu |
| 0.8 | Large Cities with tall buildings | Port Harcourt |