Open Channel Velocity
Profiling
part 7 of 13
PROFILING METHODS
.2, .4, .8 of Depth Method
 | Measure depth of flow (details). |
| Calculate the positions on the centerline
by:
| 0.2 x depth |
| 0.4 x depth |
| 0.8 x depth |
|
| At the .2, .4, and .8 positions, measure and
record the velocities (Figure 1-2).
Comment: In manmade channels, measure the .2, .4, and .8
positions from the bottom. |
| Average the .2 and .8 velocities. |
| Average the .4 velocity with the .2 and .8
average for the average velocity. |
|
