Weirs

Details

Restricting and Measuring Outlet Flow for Optimal Drainage

Measure Flow Rate

Flow rate is determined by measuring the liquid depth in the pool upstream of the weir.

Partnered with Flumes

Wiers can be used in conjunction with flumes, both which can manage flow by measuring the water depth at a single point.

Details

Stormwater runoff from a large area can overwhelm a drainage system. It can be beneficial to temporarily detain large amounts of runoff in a pond or another detention structure by installing a stormwater weir at the outlet. Weirs retain fluid using a baffle with area openings, which are designed to restrict outlet flow rates based on the level of the fluid or head pressure.

Wiers can be used in conjunction with flumes, both which can manage flow by measuring the water depth at a single point. And by using the structure’s associated equation or table, the flow rate can be calculated.

How It Works

In its simplest form, a weir is no more than an obstruction placed in a channel over which water flows. A weir is placed in a channel to obstruct and/or monitor the channel flow. The obstruction is a specially shaped notch or opening set above the floor of the channel. Weirs can be used for flow restriction and/or measuring flow. The flow rate over a weir is determined by measuring the liquid depth in the pool upstream of the weir.

Models

About the Stormwater Weir

The StormWeir™ is a compact system designed for effective stormwater management in urban areas. Made from durable precast concrete, the system features multiple chambers, weirs, and baffles for optimal separation of debris and pollutants. Designed for direct burial, the StormWeir™ minimizes visual impact and comes with heavy-duty access covers for easy maintenance. The StormWeir™ is available in various sizes and configurations to meet diverse application needs and complies with municipal codes and local stormwater regulations.

Applications

Stormwater weirs can temporarily detain large amounts of runoff in a pond or another detention structure.

Industrial Sites

Weirs can be used at industrial facilities to control stormwater runoff, ensuring compliance with environmental regulations and preventing contamination of nearby water bodies.

Agricultural Fields

In agricultural settings, weirs help manage stormwater runoff and irrigation water to prevent soil erosion, nutrient loss, and water pollution.

Road and Highway Drainage

Weirs used along roads control the flow of stormwater runoff to prevent flooding and maintain the structural integrity of the roadway.

Watershed Management

Weirs help protect water quality, prevent erosion, and maintain healthy ecosystems within watersheds.

Specs & Docs

WBS-1

Weir Structure with Pipe Connections (Model WBS)

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