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STAGE
MEASUREMENT
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H-Flume
The H-Flume is most commonly used to monitor
agricultural field runoff and plot studies. The
design of H-type flumes uses features of both flumes
and weirs. The bottom is flat and unobstructed like
a flume so silt and sediment will pass through more
freely. However, the flow is controlled so it can be
measured, by discharging through a sharp-edged
opening like a weir, that is cut at an angle sloping
back against the oncoming flow. In fact, H-type
flumes are more weir than flume. Flume size is
determined by the depth or height of the flume at
its entrance. There are three types of H flumes: HS
flumes to measure small flows having maximum flow
rates from 0.08 to 0.82 cfs; HL flumes for large
flows with maximum, flow rates from 20.7 to 117.0
cfs; and H flumes, which are probably used more
frequently, for the mid-range with maximum flow
rates from 0.3 to 30.0 cfs. (0.009 to .085 m/s).
809-080 HS-Flume
809-081 H-Flume
809-082 HL-Flume
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