Underground Modular Stormwater Infiltration Systems
Underground modular stormwater infiltration systems provide an efficient and sustainable solution for managing rainfall at its source. Designed with lightweight yet high-strength modular structures, these systems create permeable underground voids that allow stormwater to infiltrate the soil, recharge groundwater, and reduce surface runoff. Compared with traditional gravel beds or concrete pits, modular infiltration systems deliver higher infiltration efficiency, predictable hydraulic performance, and easier installation in both urban and rural environments.
Suitable for residential developments, commercial sites, parking areas, roads, and green infrastructure projects, the system supports modern stormwater strategies such as SUDS and LID. Each module is engineered for long-term structural stability, high load-bearing capacity, and minimal maintenance over its lifespan.
High-Efficiency Modular Underground Infiltration System | Direct Soil Infiltration & Sustainable Groundwater Recharge | Improve Urban Drainage
Our Modular Underground Infiltration System Series is designed to efficiently capture, store, and infiltrate stormwater directly into surrounding soil, helping projects reduce surface runoff, restore groundwater levels, and improve overall site drainage performance. Built around a modular underground structure, this series provides flexible configuration, rapid installation, and long-term stability across residential, commercial, industrial, and municipal environments.
This infiltration series incorporates two core technologies:
① StormFlow® infiltration tunnels, featuring a high void ratio and fast percolation performance for large-volume infiltration fields; and
② StormBreaker® modular infiltration crates, which offer customizable underground layouts, high load-bearing capacity, and multi-layer installation options for deeper or more complex project conditions.
With compliance toward SuDS, LID, WSUD, LEED, and international stormwater engineering standards, our underground infiltration systems support engineers and developers in achieving sustainable drainage goals with reduced surface flooding and minimized burden on municipal drainage networks. The modular design enables easy expansion, optimized soil contact area, and reliable groundwater recharge, even in space-limited urban settings.
Customized engineering support—including hydraulic calculation, soil permeability assessment, system layout design, and project-specific configuration—is available to ensure optimal performance under diverse geological and climatic conditions.
What Is an Underground Infiltration System?
Underground infiltration system allows stormwater to percolate naturally through soil rather than flowing into drainage networks. It is engineered using modular tunnels or crates that create void space underground for temporary storage and infiltration.
Modular Infiltration Technologies We Offer
1. StormFlow® Underground Infiltration Tunnel
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95% void ratio
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Rapid infiltration performance
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Ideal for shallow underground installation
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Suited for parks, green belts, and permeable zones
2. StormBreaker® Modular Infiltration Crates
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Fully modular, stackable design
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Flexible underground layout
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Suitable for deep excavation zones
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High structural load capacity (32T–100T)
How Underground Infiltration Works
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Stormwater enters through filtration inlets
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Water fills underground modular tunnels or crates
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Clean water infiltrates surrounding soil
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Overflow directed to downstream drains if required
Comparison Table: Attenuation vs. Detention vs. Infiltration
| Category | Attenuation System | Detention System | Infiltration System |
|---|---|---|---|
| Core Function | Peak flow reduction | Delayed discharge with flow control | Direct soil infiltration |
| Primary Purpose | Temporarily reduce runoff entering drains | Store and release water at a controlled rate | Recharge groundwater and reduce runoff |
| Final Water Destination | Discharge / reuse / infiltration | Discharge to downstream drainage network | Infiltrates into surrounding soil |
| Storage Requirement | Yes (temporary) | Yes (temporary) | Short-term storage before infiltration |
| Flow-Control Device | Not required | Required (orifice / flow regulator) | Not required |
| Underground Installation | Yes | Yes | Yes |
| Modular Structure | Yes – attenuation crates | Yes – detention tank system | Yes – infiltration tunnels / crates |
| Typical Products | StormBreaker® attenuation crates | StormBreaker® detention tank | StormFlow® tunnels / StormBreaker® infiltration crates |
| Soil Requirements | All soil types | All soil types | Requires permeable soil |
| Rainwater Reuse Compatibility | Yes | Yes | No (designed for soil infiltration) |
| SuDS / LID Classification | Peak flow attenuation | Detention / flow control | Infiltration basin / trench |
| Flood Risk Reduction | Strong | Strong | Moderate (soil dependent) |
| Impact on Municipal Drainage | Reduced | Significantly reduced | Greatly reduced |
| Suitable for High Groundwater Areas | Yes | Yes | No |
| Installable Under Roads | Yes | Yes | Yes (with load-rated crates) |
| Maintenance Level | Medium | Medium–High (flow unit) | Low |
| Ideal Project Types | Commercial, municipal, industrial, residential | Commercial, municipal, large developments | Parks, greenbelts, residential areas |
| System Complexity | High | Very high | Medium |
Benefits of Modular Underground Infiltration Systems
1. Groundwater Recharge
Restores aquifers naturally through underground infiltration.
2. Reduced Surface Runoff
Eliminates road ponding and overload on municipal drains.
3. Space-Saving Underground Design
Ideal for dense urban developments.
4. Modular and Scalable
Easily expanded for large projects.
5. Eco-Friendly Performance
Supports sustainable drainage and sponge-city design.
Get a Customized Modular Infiltration System Proposal
From residential developments to commercial drainage upgrades, our underground modular infiltration systems deliver efficient runoff reduction and reliable groundwater recharge. Contact us to receive a tailored solution with technical recommendations, design drawings, and material specifications for your project.
Applications Of Underground Modular Stormwater Infiltration System
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Residential soakaway systems
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Commercial and industrial sites
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Roadside green belts
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Parks, schools, and public spaces
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Underground sponge city infrastructure
Engineering Considerations
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Soil permeability (k-value)
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Groundwater depth
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Pretreatment for sediment control
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Loading requirements for underground tanks
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Layout design of modular infiltration fields
FAQ
FAQ 1: What is an underground modular infiltration system?
It is an underground system that uses modular tunnels or crates to store stormwater temporarily and allow gradual infiltration into surrounding soil.
FAQ 2: When is infiltration preferred over detention?
Infiltration is ideal when soil permeability is sufficient and local regulations support groundwater recharge instead of controlled discharge.
FAQ 3: What soil conditions are required for infiltration?
A suitable infiltration rate (permeability value between 10⁻³ to 10⁻⁵ m/s), adequate soil depth, and good groundwater separation are essential for optimal performance.
FAQ 4: Does an underground infiltration system require pretreatment?
Yes. Filtration inlets or sediment chambers are recommended to prevent clogging and extend system lifespan.
FAQ 5: Can modular infiltration crates be installed under roads?
Yes. Yude’s high-strength modular crates support heavy traffic loads and are widely used beneath roads, parking lots, and industrial pavements.
FAQ 6: Do you offer design and sizing support for infiltration systems?
Yes. We provide infiltration sizing, soil evaluation guidance, layout design, CAD drawings, and BOQ for all project types.
