Foley Stormwater Products

Stormwater Detention/Retention

Precast concrete underground detention is the most efficient, safest, and longest lasting method for storing stormwater underground.  StormPrism was conceived and designed specifically to provide optimal configurations to store stormwater underground. StormPrism was also developed to address seismic design loads for Level 5, if necessary. Its unique design creates open and accessible space that won’t trap sediment and debris behind a maze of interior walls and step-through openings. This configuration also ensures that vital maintenance and inspection is easy and safe. StormPrism was developed with all of these factors in mind and more.

Detention

taking control stormwater runoff

StormPrism Stormwater Detention Solutions offer several key benefits that address both environmental and infrastructure challenges associated with urban development and heavy precipitation events. Detention systems temporarily store stormwater runoff and release it at a controlled rate, helping to manage the volume of water that flows into drainage systems and natural water bodies.

Primary Benefits of Stormwater Detention

  • Flood Mitigation: By temporarily storing runoff during heavy rain events and releasing it slowly, stormwater detention systems prevent the overwhelming of drainage systems and reduce the risk of flooding in urban areas, protecting property and infrastructure.
  • Erosion Control: Rapid stormwater runoff can cause significant erosion in streams, rivers, and other water bodies. Detention helps to minimize the velocity and volume of water being discharged, thereby reducing erosion and protecting aquatic habitats.
  • Water Quality Improvement: Detention systems can be designed to allow for some treatment of stormwater by settling out sediments and associated pollutants before the water is released. This helps to improve the quality of water entering natural water bodies.
  • Peak Flow Reduction: Detention systems are effective in reducing the peak flow rates that result from storm events, ensuring that the downstream stormwater management infrastructure is not overwhelmed. This is, crucial for maintaining the integrity of sewers, culverts, and natural channels.
  • Groundwater Recharge Enhancement: Some detention systems, particularly those designed for infiltration, can enhance groundwater recharge by allowing detained water to percolate into the ground. This is beneficial for replenishing aquifers and maintaining base flow in streams during dry periods.
  • Compliance with Regulations: Many municipalities and regions have regulations in place to manage stormwater runoff. Implementing stormwater detention systems can help developers and property owners comply with these regulations by controlling runoff rates and volumes.
  • Reduced Infrastructure Strain: By managing runoff volumes and rates, detention systems reduce the strain on existing stormwater infrastructure, potentially extending its lifespan and reducing the need for costly upgrades or repairs.
  • Cost Savings: Effective stormwater detention can lead to cost savings over time by reducing the need for extensive stormwater infrastructure, minimizing flood damage repair costs, and avoiding fines or fees associated with non-compliance with stormwater regulations.

Configurations

StormPrism stormwater detention solutions are designed and engineered to collect and manage the volume and timing of stormwater runoff. Stormwater detention helps reduce peak flows ‘and plays a crucial role in flood prevention and erosion control. ‘StormPrism belowground systems combine the design flexibility of ‘2 modular system with the strength and durability of precast concrete.

treatment

“The first line of defense for treated captured stormwater is the inclusion of a forebay at the inlet of the stormdrain into the StormPrism detention system. This forebay creates an area that allows sediment from the “first flush” to settle out prior to entering the main stormwater collection chamber. Sediment is then more easily removed from the system during maintenance operations.

maintenance

StormPrism stormwater management solutions are designed and engineered to allow for full system equipment access. This allows for maintenance equipment to enter and navigate within the system for cleanout and maintenance as required

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