Blog

Do you need more flow capacity than a given flume will handle but are tight on space? If so, one option might be to look at using an EXTENDED HEIGHT flume. Extending the sidewalls can allow a flume to pass more flow without using a larger flume, which will allow you to pass more…

One of the advantages of using a device like a Parshall Flume is that, properly installed and applied, there is NO NEED TO CALIBRATE THE FLUME! Now that doesn’t meant that you don’t need to periodically check to make sure the Parshall Flume isn’t clean and level, or that…

Openchannelflow is pleased to announce that we are partnering with Sherwoood-Logan Associates to service the New York (metro) / New Jersey / Virginia / DC area. Now entering their 44th year, Sherwood-Logan are the premier manufacturers representative, repair facility, and systems…

One of the more misunderstood flumes used to measure open channel flow is the Montana (Short Parshall) Flume…but it doesn’t have to be!

All dams have some amount of seepage as the water impounded by the dam seeks paths of least resistance through the dam and its foundation. While this seepage is natural, it becomes a concern if it carries material from the dam itself with it. It’s important therefore to not…

Openchannelflow is extremely pleased to announce we are partnering with WC Equipment Sales (WCES) for full-line promotion in the State of Georgia.

Openchannelflow offers a range of Parshall Flumes for a variety of flow measurement applications in Hawaii. The primary use of Parshall Flumes in Hawaii is to measure sanitary / wastewater flows, but the flumes are also used to measure industrial discharge and water use /…

Flat fiberglass tops on Packaged Metering Manholes provide a low visual profile without the need for a grade ring / frame / cover system. All fiberglass construction means the tops are corrosion-resistant and extremely strong – capable of withstanding pedestrian foot traffic…

Turbulence results from relatively small volumes of water spinning in random patterns as the body of water moves downstream. Turbulence can be recognized as boils on the water surface or three-dimensional eddies in the flow stream, which appear and disappear randomly. Because…

Recently Openchannelflow was asked to assist the New York State Corrections and Community Supervision Department with issues they were having at their Green Haven Correctional Facility (GHCF). The facility had recently undergone an expansion, and they were experiencing problems…

While it's important to understand the sections of a flume and how they work, it's also important to understand the functional elements of a flume and the purposes they serve. Dimensional bracing is usually installed at the top of the flume to make sure that the flume…

The Kennison Nozzle is a proprietary device developed by BIF to measure spilling flow from partially full horizontal pipes. The Kennison nozzle's design restricts the flow vertically – leaving the floor of the nozzle flush with the invert of the pipe – allowing solids to pass…

Foam in flumes or weirs is a headache. It's a source of measurement error, and it frequently requires additional maintenance and monitoring. This article is not intended to discuss the causes of foam (other than an overview); instead is intended to provide practical solutions…

Over the years, Parshall Flumes have become common sights at wastewater treatment plants (WWTPs) across the US. The flumes can be found at a number of points throughout the plant. Many plants rely on Parshall Flumes to measure headworks flows. Depending upon the plant size, the…

At Openchannelflow we understand that not everyone who uses flow products does so on a regular basis. To help out the uninitiated or those needing a refresher, Openchannelflow has put together a series of blog articles covering the anatomy / nomenclature of our various flow…

When selecting among the various types of thin plate weirs there are a number of things to keep in mind: Without additional flow conditioning, weirs can require long upstream weir pools - the greater the weir hear head, the greater the length of the weir pool. Weir pools should…

In space constrained applications it can be difficult to get the upstream conditions necessary for accurate flow measurement with a Parshall flume. While flow conditioners - usually perforated plates or stainless steel fingers - can be used in some installations, they aren't…

Openchannelflow is a frequent supplier to and longtime supporter of research universities and colleges. We regularly assist educational institutions on how best to measure flow within catchments and watershed as well as characterizing and measuring edge-of-field flows, green…

Openchannelflow has a limited number of domestic and international territories open for exclusive representation of our flumes, shelters, manholes, weirs, gauges, and enclosures. Openchannelflow's focus is to provide superior products for the measurement, conditioning, and…

It is with great pleasure that Openchannelflow announces that Southland Water Technologies has signed as a full-line representative of Openchannelflow for southern California and central Nevada. According to Jon Wachter, Vice President of Openchannelflow: