https://digitalcommons.usu.edu/water_rep/94/
"Analysis of Submergence in Flow Measuring Flumes" by Gaylord V. V. Skogerboe and M. Leon Hyatt
Submerged flow exists in a measuring flume when a change in flow depth downstream from the flume causes a change in flow depth upstream for any particular...
analysissubmergenceflowmeasuringflumes