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Flow Surveys

Flow surveys

EMS carries out flow gauging in rivers, streams and manmade channels culverts and other constructed channels.

Have a question?

Contact our expert David Claridge for more information.

Different equipment and measurement techniques are used appropriate to each application. This can include area velocity probes, velocity profiling and dilution gauging. 

Flow survey data capture 

Flow rate, velocity and depth information is recorded at time-steps of several minutes. This information is reported back to the client in detailed and summarised form including daily minimums, maximums, averages and totals. 

Data is usually collected over a number of weeks to capture significant events and a range of conditions. 

River Gauging 

River gauging often involves the use of several instruments across a river cross-section. These measure flow depth and velocity through the water column. The cross-section is measured so the relationship between depth and flow area is known allowing measurements to be resolved into flowrates. Cross-sections are chosen carefully to avoid re-circulations and moving river beds. In difficult circumstances, dilution gauging is used. 

Rainfall Monitoring 

Local rainfall information may be required. In this case, rain gauges are sited appropriately around the site to record at the required interval. 

Remote Monitoring 

Flow and water quality data can all be streamed over the internet for deployments where immediate review is required. Clients use EMS’s portal facility to view data which can be pushed regularly (e.g. every 15 minutes). eDAS® is a environmental data acquisition system which can be implemented to collate, centralise and present your on-site environmental monitoring data.

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Related Case Study

EMS support Premier Foods to maintain environmental compliance

EMS support Premier Foods to maintain environmental compliance

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Recent Insights

Fortnightly Bulletin - 20th May 2024

Fortnightly Bulletin - 20th May 2024

The Environment Agency and waste management trade body, the Environmental Services Association (ESA) have launched their Waste Industry Placement Scheme to support the sharing of knowledge between the regulator and industry.  

Pipebot Patrol wins share of £40M in Water Breakthrough Challenge 

Pipebot Patrol wins share of £40M in Water Breakthrough Challenge 

Ofwat’s Innovation Fund today announces 17 winners from the fourth Water Breakthrough Challenge, a £40 million competition that invited solutions with the potential to deliver wide-scale, transformational change benefitting customers, society and the environment.  

Want to know more?

To discuss Flow Surveys and our other Water and Wastewater services, please contact David Claridge our Business Development Manager (Water & Wastewater).

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