• Parshall Flumes
  • Parshall Flumes - 2
  • Parshall Flumes - 3
  • Parshall Flumes - 4
  • Parshall Flumes - 5 (Description: A fiber reinforced plastic flume in a metering manhole)
  • Parshall Flumes - 6 (Description: The Parshall Flume was built to capture the snow melt flow in the spring. It is there to understand the watershed effect of the flow and the volume expected.)
  • Parshall Flumes - 7 (Description: Custom Enduro Model 200 with Parshall Flume Metering System-This enclosure can be customized to meet any flow conditions and can feature any type of flume.)

Parshall Flumes are used in sewage treatment plants as well as industrial and municipal sewers. When it comes to fixed flow monitoring installations, the Parshall Flume is one of the most widely-used flume types. The special shaped open channel flow section is often installed in ditches or canals to measure flow rate.

Parshall Flumes are sized by throat width and conform to standardized dimensions published in the U.S. Department of the Interior, Bureau of Reclamation.

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Item #

Item Name

Throat Width

Minimum Flow Range

Maximum Flow Range

N/A 1 Inch (in) Throat Width Parshall Flume N/A 1 in N/A 1.4601 gpm N/A 87.271 gpm
N/A 2 Inch (in) Throat Width Parshall Flume N/A 2 in N/A 2.9201 gpm N/A 174.54 gpm
N/A 3 Inch (in) Throat Width Parshall Flume N/A 3 in N/A 12.635 gpm N/A 833.64 gpm
N/A 6 Inch (in) Throat Width Parshall Flume N/A 6 in N/A 24.318 gpm N/A 2,764.1 gpm
N/A 9 Inch (in) Throat Width Parshall Flume N/A 9 in N/A 40.662 gpm N/A 3,978.9 gpm
N/A 12 Inch (in) Throat Width Parshall Flume N/A 12 in N/A 154.98 gpm N/A 7,240.6 gpm
N/A 18 Inch (in) Throat Width Parshall Flume N/A 18 in N/A 226.56 gpm N/A 11021 gpm
N/A 24 Inch (in) Throat Width Parshall Flume N/A 24 in N/A 296.31 gpm N/A 14858 gpm
N/A 30 Inch (in) Throat Width Parshall Flume N/A 30 in N/A 365.06 gpm N/A 18726 gpm
N/A 36 Inch (in) Throat Width Parshall Flume N/A 36 in N/A 433.16 gpm N/A 22616 gpm
N/A 48 Inch (in) Throat Width Parshall Flume N/A 48 in N/A 566.66 gpm N/A 30486 gpm
N/A 60 Inch (in) Throat Width Parshall Flume N/A 60 in N/A 994.53 gpm N/A 38429 gpm
N/A 72 Inch (in) Throat Width Parshall Flume N/A 72 in N/A 1181.0 gpm N/A 46434 gpm
N/A 84 Inch (in) Throat Width Parshall Flume N/A 84 in N/A 1828.6 gpm N/A 54492 gpm
N/A 96 Inch (in) Throat Width Parshall Flume N/A 96 in N/A 2075.9 gpm N/A 62596 gpm
N/A 120 Inch (in) Throat Width Parshall Flume N/A 120 in N/A 2713.5 gpm N/A 131180 gpm
N/A 144 Inch (in) Throat Width Parshall Flume N/A 144 in N/A 3221.4 gpm N/A 232812 gpm
N/A 42 Inch (in) Throat Width Parshall Flume N/A 42 in N/A 500.21 gpm N/A 26541.59 gpm
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