27. Undular Jump A hydraulic jump or other transcritical flow condition may reduce the accuracy of a flow monitor. However, this effect is not strictly limited to critical flow (Fr […]
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26. Hydraulic Jump This scattergraph is from a site that experiences a hydraulic jump. This condition occurs when flow transitions from supercritical to subcritical flow. In this example, the hydraulic […]
25. Iso-Froude Lines The Froude Number (Fr) is a dimensionless number used to describe flow conditions and is analogous to the Mach Number defining supersonic flight. If the Froude Number […]
24. Sewer Amusement These data are from a flow monitor installed on one of three interceptors arriving at a wastewater treatment plant (WWTP). This unusual and entertaining pattern was created […]
23. Sewer in the News This scattergraph is a hydraulic mother lode showing three distinct hydraulic events. This flow monitor was installed in a 15-in sewer located just upstream from […]
22. Hydraulic Hysteresis This scattergraph displays data from a flow monitor installed in a 21-in trunk sewer. During wet weather, backwater and surcharge conditions are observed in a distinct manner […]