Manning's n of different type areas
| Type . | Manning's n . |
|---|---|
| Concrete channels | 0.011–0.020 |
| Vegetal channels | 0.030–0.40 |
| Closed conduits – concrete pipe | 0.011–0.015 |
| Overland flow – smooth asphalt | 0.011 |
| Overland flow – smooth concrete | 0.012 |
| Overland flow – short grass | 0.15 |
| Overland flow – dense grass | 0.24 |
| Type . | Manning's n . |
|---|---|
| Concrete channels | 0.011–0.020 |
| Vegetal channels | 0.030–0.40 |
| Closed conduits – concrete pipe | 0.011–0.015 |
| Overland flow – smooth asphalt | 0.011 |
| Overland flow – smooth concrete | 0.012 |
| Overland flow – short grass | 0.15 |
| Overland flow – dense grass | 0.24 |