Exploring the 6-Inch Parshall Flume

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The Parshall flume is one of the most popular and well-researched flume styles you can get, and there are several different forms available. The 6-inch Parshall flume is one of the best, and it was a favorite of Dr. Parshall himself during his initial developments of the design. Learn everything you need to know about the 6-inch Parshall flume, and discover whether your flow channel can enjoy all the benefits it brings.

A History of Success

Being one of the most widely used flume types in history, the 6-inch Parshall flume has been implemented successfully in a wide variety of conditions. You’ll find these flumes used to measure dam seepage, mine dewatering, and industrial pretreatment monitoring. Of course, they’re also useful for smaller surface waters like creeks as well as major water treatment plants including discharge and interplant flows.


If a 6-inch Parshall flume doesn’t quite fit your flow channel on its own, you may be able to make it work with a simple modification or two. This flume design is remarkably customizable, making it easy to get the perfect fit for your flow channel conditions and get the accurate measurements you deserve with a wide range of flow rate velocities.

The standard flume design works well for open flow applications, but you can also opt for end adapters if you need to attach it to pipes or flanges. Additionally, you can install a metering manhole if it’s an underground application accessible via a fiberglass manhole. Just keep in mind that the barrel must measure 48 inches if you’re looking to integrate a 6-inch Parshall flume into the manhole. Finally, you can add wing walls to the flume to span channels up to 2 feet, 11.5 inches wide.


Parshall flumes would never have gained traction without offering reliable accuracy. Fortunately, the Parshall tends to be remarkably accurate compared with other flume styles, thanks to the extensive research done on the design. Under laboratory conditions, the Parshall flume can offer accurate measurements within just 2%. Of course, free-flow applications, in reality, tend to offer an accuracy closer to 5%, but that’s still a step up from many other flume styles.

Submergence can be a serious problem for flumes and weirs alike, with some being rendered effectively useless should the downstream conditions cause the flow to back up. With a 6-inch Parshall, however, you can adjust for submergence in many cases as there’s a universal flow equation that accounts for the difference submergence makes.

6-Inch Parshall Flume From Tracom

If you’re looking to get your hands on a 6-inch Parshall flume, Tracom has got you covered. We utilize fiberglass in our construction, so your flume and any customization options you choose will be crafted in a singular piece that’s expertly molded together to exact specifications. With this kind of accuracy in the design, you can always count on accurate flow rate measurements. Contact us team today to get started designing the perfect 6-inch Parshall flume specifically suited to your unique flow channel conditions