3” Montana flume with removable stainless
steel bubble tube and staff gauge

A modification of the Parshall flume, Montana flumes conform to the standard dimensions set forth for Parshall flumes except that “the portion of the flume downstream from the end of the converging section” is removed.  So long as “the flume has been set for free flow where it is not expected to operate above the submergence limit”, the flume conforms to the discharge characteristics of the similarly sized Parshall flume. 

As with Parshall flumes, Montana flumes are sized by throat width and conform to standardized dimensions published in the U.S. Department of the Interior, Bureau of Reclamation, Water Measurement Manual.

Typical applications include:

• Industrial process discharge
• Irrigation and agricultural runoff

Actual application of the Montana flume is limited due to the concern regarding submerged flow.

Options and Accessories

• Ultrasonic mounting brackets
• Bubble tubes
• Sample tubes
• Submerged probe cavities
• Stilling wells (attached and detached)
• Staff gauges
• Removable probe holders
• Inlet end adapters
• Pipe stubs
• Flanged end connections 
• FRP grating
• Inlet wingwalls
• Multi-piece construction
• Nesting
• Chemically resistant gel coat

Listed below are the available Montana flume sizes and their recommended flow ranges.

Specifications - Installation Instructions - Typical Drawing

If you would like additional information, pricing, or assistance in sizing and specifying a flume, please fill out and submit our
flume application form.

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