Pygmy water current meter is used for stream-flow measurements

• A. in shallow streams, flumes and small channels, where the velocity of water does not exceed 1m/sec.
• B. in rivers and big channels, where the velocity of water does not exceed 1m/sec.
• C. in shallow streams, flumes and small channels, where the velocity of water exceed 1m/sec.
• D. in rivers and big channels, where the velocity of water exceeds 1m/sec.