Water Measurement Flumes

In stream velocity measurement using a current meter by the two-point method, measurements are taken at:

Options:

• (A) $0.2$ and $0.8$ of the flow depth from the water surface, and averaged as $\bar{v} = (v_{0.2} + v_{0.8})/2$
• (B) $0.5$ and $1.0$ of depth
• (C) $0.1$ and $0.9$ of depth
• (D) $0.3$ and $0.7$ of depth