Your #1 Montana Flume Supplier

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.

Available in Multiple Sizes with Many Options

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. It is available with a wide variety of options and accessories.

Typical Applications

  • 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
  • Fiberglass grating
  • Inlet wingwalls
  • Multi-piece construction
  • Nesting
  • Chemically resistant gel coat
  • montana flume flow measurement
  • Montana Fiberglass Flume
  • Montana Flume

Technical Details

Size & Style Recommended Flow Rates
1” 2 – 85 GPM
2” 3 – 210 GPM
3” 3 – 834 GPM
6” 22 – 1,754 GPM
9” 40 – 3,979 GPM
12” 146 – 7,336 GPM
“18” 227 – 11,021 GPM
24” 296 – 14,853 GPM
30” 366 – 18,721 GPM
36” 434 – 22,618 GPM
48” 567 – 30,484 GPM
60” 995 – 38,426 GPM
72” 1,181 – 46,431 GPM
84” 1,828 – 54,489 GPM
96” 2,076 – 62,591 GPM
120” 2,575 – 162,414 GPM
144” 3,057 – 275,541 GPM

Additional Examples

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