The Trapezoidal flume has a V-shaped cross-section and flat floor.
When flows are low and flowing through the point of the V, a relatively large amount of head (level) is generated, as the crest width of the water is small providing low flow sensitivity and accuracy.
As the flow increases, the effective crest width increases (the V expands outwards) giving the Trapezoidal flume the ability to measure higher flows.
Designed in accordance with WSC (Washington State College),