Rating Correction for Lateral Settlement of Parshall Flumes
Publication: Journal of Irrigation and Drainage Engineering
Volume 116, Issue 6
Abstract
A 3‐in. (7.62‐cm) Parshall flume is installed in a channel and flow rates are measured with lateral flume crest slopes of 0, 3.6, 6.5, 9.0, 13.3, and The apparent discharge is compared to the measured discharge for each slope with free outfall conditions. The results indicate that the Parshall flume accuracy is in error approximately 7% at a lateral slope of It is determined that the flow measurement requires a 0.75% adjustment for each 1% of lateral settlement at the flume crest. A method for correcting the apparent discharge with the measured discharge is presented for variable lateral slope conditions.
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References
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Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 116 • Issue 6 • November 1990
Pages: 797 - 803
Copyright
Copyright © 1990 ASCE.
History
Published online: Nov 1, 1990
Published in print: Nov 1990
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