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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.

The freeboard is the difference in height between the top of a flume or weir and the highest water level anticipated. Freeboard is a guard against overtopping by waves, unexpected rises in the water level, or miscalculation in the maximum anticipated flows. Freeboard is also…

While not as varied as H flumes are in terms of their mounted, Parshall flumes can be installed in a number of creative ways to meet your flow measurement needs. Versitle in instalation and widely used, the Parshall flume is most famous of the short throated class of flumes and…

In terms of installation and mounting, one of the most versatile flumes is the H Flume. This versatality in installation, combined with a wide range of styles and sizes, make the H flume one of the most popular flumes to meausre water and wastewater flows.

From time to time, Openchannelflow comes across videos, discussions, or other information that we think may be useful for our readers. Keep in mind that while we present this information for your review,

Location: Shaver's Creek Environmental Center, Petersburg, PA, USA Applicaton: Watershed runoff flow monitoring and characterization