R-Tank® stormwater modules provide underground storage for runoff. They can be used in detention, infiltration, and rainwater harvesting applications.

R-Tank® is among the most efficient options available for underground stormwater systems. When space is at a premium and the smallest possible footprint is needed to free up space for utilities and other site elements, R-Tank® is 95% efficient, making it the perfect option. And with module heights ranging from 2” to nearly 7’, there is sure to be a tank that will fit your needs.

The system is an alternative to stormwater basins and a more efficient, space saving alternative to other underground systems. After a rain event fills the R-Tank®, stormwater can flow into the drainage system, infiltrate into the ground, or be reused.

It is available in multiple configurations (Standard, HD, SD, XD, and UD) to fit a variety of depth and loading requirements. And with an unlimited array of possible design layouts, the R-Tank® can adapt to your project to make the most economical systems possible. Strong. Versatility. Cost-Effective. That’s R-Tank®!

R-Tank systems can be easily modeled with the HydroCAD® Stormwater Modeling system, allowing simplified analysis of the devices’ behavior in a drainage and stormwater management system. HydroCAD® includes custom rating curves for these devices, which can be used with the “special outlet” capability to easily define the devices’ stage-discharge characteristics. Click HERE for details.


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–  High Capacity

–  Modular Design Footprints

–  High Strength

–  Increased Infiltration and Ex-filtration

–  Easy to Transport

–  Lightweight and Quick to Install Permanent and Maintainable Storage Volume