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Hydro International’s Hydro-Brake Flow Controls have been installed in a new dam near Devil’s Bridge on the Blackburn Brook, just outside Sheffield.

JBA Consulting specified two of the large flow-control devices to reduce the risk of flooding on the nearby Thorncliffe Industrial Estate and surrounding residential areas.

The Blackburn Brook runs through a 500m long culvert beneath the Thorncliffe Industrial Estate.

The small weir, situated on the brook, creates a holding capacity of just 4000m3, which isn’t large enough to protect against flooding.

As a result, the industrial estate and nearby housing have suffered flood damage and disruption.

To solve this problem, a dam is being built that will create a potential storage capacity of 32,000m3, approximately 300m upstream of the culvert.

Joao Santa-Clara, consulting engineer at JBA Consulting, said: ‘The area suffered from extensive flooding in 2007 due to a 150-year storm event that exceeded the capacity of a culvert on the local Blackburn Brook.

‘The flood caused a great deal of damage and a dam was needed to prevent a repeat.

‘By installing two 1098mm diameter Hydro-Brake Flow Control devices, we can control the water flow to match the maximum capacity of the culvert, without the stored water taking excessive land in a restricted area and country park,’ added Santa-Clara.

Alex Stephenson, stormwater division director at Hydro International, said: ‘The Hydro-Brake Flow Control installation will control the flow, up to a design maximum of 5.7m3/sec, so will protect the culvert and prevent overtopping.

‘Above this flow, the stored water will back up behind the dam but the flow characteristic of the devices limits the speed of back-up compared with other forms of flow control, saving in the region of 10-15 per cent of land grab,’ he finished.

Hydro International

Hydro International is a market-leading provider of products and solutions to control the quantity and improve the quality of water with minimal maintenance.

Hydro’s business operations are based in the UK, US and Ireland and its products are also used across the globe. Hydro products have won international awards for outstanding contributions and technical innovation in the water industry.

Hydro Stormwater

Hydro International’s Stormwater Division delivers sustainable, efficient and cost-effective solutions for water management with minimal land-take. All Stormwater products have no moving parts, no power requirements, a small footprint and low maintenance requirements.

Hydro Wastewater

Hydro International’s Wastewater Division provides products and designs solutions for the effective treatment of effluent and potable water. It is also a trusted partner for spares, service and maintenance agreements to water asset managers.

Hydro’s treatment systems cover an extensive range of water and wastewater management solutions including grit removal, sludge scraper systems, primary and washwater clarification, aeration, sand filtration, sludge screening and transportation and Combined Sewer Overflows.

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