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Although initially developed to measure runoff from watersheds and experimental plots, the H Flume has proven to be quite flexible in its mounting configurations. H Flumes can be a part of a fiberglass packaged metering manhole, free-standing, or embedded in concrete or earthen…

Fiberglass packaged metering manholes are an innovative solution to the problem of needing to measure piped flow below grade. Packaged metering manholes factory integrate a flow element (usually a flume, but weirs and magnetic flow meters can also be integrated) directly into a…

For years precast concrete manholes have been the default choice in sanitary and storm water applications.  Over the years, though, packaged fiberglass manholes have begun to displace concrete manholes for a number of reasons. Fiberglass manholes are: Light weight (1/10th…

The Parshall flume is the most common type of flume used for monitoring industrial discharges.  The ubiquity of the Parshall flume means that it is usually well understood by pretreatment inspectors and industrial users alike – not an insignificant consideration…

From time to time we like to bring you unusual or innovate approaches that customers use in the field. Located in Red Feather Lakes, CO (elevation 7,890 ft. [2,405 m]), Shambhala Mountain Center is nestled high in the Colorado Rockies in a serene 600-acre mountain valley…

Periodically we are asked the question:  Can Parshall flumes be made out of concrete?  The answer is:  yes, they can (but they usually aren’t)! The use of concrete in makiing Parshall flumes is limited by a number of factors: Ready availability of fiberglass…

Let’s not kid ourselves – landfill leachate is some nasty stuff. If it has gone into the landfill, there is the likelihood that it has concentrated in the landfill.  This environment can make it exceedingly challenging for primary devices (Flumes, Weirs, and…

Fiberglass Manholes are lightweight (~1/10th the weight of concrete), corrosion resistant, and watertight.  Their installation is straight forward and can be accomplished with less manpower and equipment than a traditional concrete vault or manhole.   Where line…

One of the primary advantaged of fiberglass flow metering manholes is the ability to accommodate flumes much larger than will fit inside the manhole. By being able to laminate the flume to the manhole barrel, flumes can readily extend upstream / downstream of the manhole barrel…

One of the most common uses of flumes today is to measure sanitary flows; whether this is at an industrial discharge, mobile home park, resort, or wastewater treatment plant.  Unfortunately, flumes are often selected bsed solely on their ability to handle anticipated flows…