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The 24-inch Parshall Flume is a popular size of Parshall Flume for measuring surface water flows, water rights, and sanitary flows at treatment plants. The 24-inch Parshall Flume can be useful in a number of applications, including:

The 3-inch Parshall Flume is one of the last flumes developed in the Parshall series. The flume can be used equally well to measure sanitary flows as well as surface waters. It is important to note that the 3-inch Parshall flume is the smallest Parshall Flume size that can be…

The 9-inch Parshall Flume is a popular size in the Parshall Flume family. It is equally at home measuring surface waters, wastewater flows, and water rights. The 9-inch Parshall Flume is useful in a number of applications, including:

The 12-inch Parshall Flume is one of the most popular sizes of the Parshall Flume family. The flume is equally at home measuring sanitary wastewater at a municipal treatment plant as it is measuring water rights on The Western Slope. The flume is regularly used to measure the…

For years Openchannelflow has offered staff gauges integrated into our flume, weir, and manhole products. Over time, though, we have been asked to expand our offerings to include free-standing Staff (Level) Gauges.

We often talk about how OCF tried to sweat the small things. One of the items that we have focused on is our flow meter sensor mounting brackets. Many of the designs currently on the market show, what we believe to be, a "good enough" philosophy - that the brackets hold the…

The Palmer Bowlus flume – quite possibly the second only behind the Parshall flume for measuring wastewater flows – suffers from a number of problems when it comes to its operational use.

One question we get asked on a regular basis is: can flow free fall off the end of a Parshall flume? The answer is: yes – and if possible, this is the preferred method of discharge! To understand why, we need think about how a Parshall flume operates.

The H flume is a class of flumes developed by the Soil Conservation Service (USDA) to measure runoff from catchments and experimental plots. Really more of combination between a flume and a weir, the H flume provides excellent low flow handling, solids passage, and a wide…

There are many, many different ways to mount or install an H flume, some of them quite inventive! Here we’ll go over the basics of installing an H flume in an earthen or concrete channel. Keep in mind that these guidelines are just that: guidelines. Proper sizing is the first…

Measuring flow in a flume should be a straightforward affair. Unfortunately, we get more calls and inquiries on where / how to measure flow in a Palmer Bowlus flume than all other flumes combined so we thought that we would go over it set the record straight. To better understand…

Openchannelflow offers a number of different flow conditioners to help to normalize the flow before it enters a Parshall flume. Some of the conditioners are in-flume accessories, while others are installed upstream of the flume itself.