Swales

Mitigate flooding caused by runoff and prevent rainwater overloading the sewer system with solutions from Hydrorock

Exceptional filtration of pollutants

Superior filtration than alternative solutions; filter guaranteed for 30 years

50% more water storage

Double the capacity of a gravel system

Efficient installation

No interim shoring needed, smaller excavation and fewer vehicle movements required

Highly configurable

Modular nature helps overcome unforeseen problems during installation, and allows the addition of extra capacity.

Natural aquifer blocks render installed under grass and paving

A swale is a shallow, broad channel, planted with vegetation. They are designed to attenuate and/or convey road surface runoff and filter out pollutants. Incorporating natural aquifer blocks into a swale enables routing of the runoff into the next part of the system, or can be used to buffer and infiltrate in the right conditions.

As a solution for flood mitigation as a result of runoff, and for the prevention of sewer overload and subsequent water contamination, Hydrorock swale solutions excel.

Superior efficiency
Excellent pollutant filtration
Blockage free drainage
30-year guarantee on filter
50% more water storage capacity than gravel
No need for interim shoring works
15% reduction in soil excavation (by volume and weight)
60% reduction in infill weight (far fewer vehicle loads)
33% greater surface area for infiltration (much more efficient than gravel system)
Full compatibility with other Hydrorock infiltration or attenuation systems
Up to 40 tonne load-bearing capacity with lifetime system integrity
94% absorption to volume ratio
Natural material
Recyclable

Design detailing

Resources

Downloads

Hydrorock Filtration Capability

Hydrorock Highway Filter Drains

Hydrorock Design, Warranty & Terms

The Benefits of Hydrorock

Calculator

Click here to visit our partner Hydrorock’s calculator to quickly assess the number and volume of Hydrorock natural aquifer blocks that will be required for your application.

Products

Our natural aquifer blocks are available to provide 100% sustainable, 100% recyclable water management solutions.

Installation

Installation is very simple and quick with minimal disruption. Blocks are pre-wrapped with filter membrane, so the excavation needs to be only as large as the system (no access is required to fit the membrane).

No specialist installation engineering or equipment is needed, with simple snap-together fittings.
Blocks are typically laid in a module three blocks wide. This enables the system to self-vent, and should the filters be compromised by human error, the entire system can be flushed.
Perforated pipes that are integrated within the BD blocks allow rapid water inflow and storage in each block, underground.
Extra capacity can be added quicky and easily with the installation of further blocks.
Unlike crated sumps, Hydrorock systems offer the flexibility to be fitted around existing infrastructure, such as pipes and cable, for total site optimisation.
Laying the system on a 100mm layer of sand will enable infiltration from the module into the surrounding soil, allowing the water to slowly flow from the aquifer blocks.