Modern and sustainable stormwater management system in Saudi Arabia.

Background

Amaala is part of a major coastal development near the Red Sea; an ultra-modern development where sustainability and innovation are at the heart of this transformative project.

Amaala’s commitment to environmental stewardship aligns with Saudi Arabia’s accelerating infrastructure resilience under Vision 2030; where sustainable drainage systems play a vital role in managing surface water, protecting ecosystems, and enhancing resilience.

Intense rainstorms and runoff pose risks of flooding and pollution, if not managed properly.

In this strategic setting, the stakeholders involved in this project aimed to design an advanced, sustainable and low-impact drainage solution that fits local sustainability goals and technical regulations.

Our client required Hydro International’s 40+years of experience offering stormwater solutions to find the right solution for this specific project.

For this development, Hydro International recommended the use of Geoplast Aquabox as a means to attenuate flows.

Challenge

The developer needed an efficient, scalable stormwater attenuation system that complied with strict water regulations and used sustainable materials. The solution had to handle large runoff volumes from impervious surfaces while meeting the master plan’s environmental targets. 

It also needed to fit under infrastructure areas (roads and parking) subject to heavy vehicle loads. In short, the team sought an underground tank that could store peak flows safely, release them controllably, and be built with industrial recycled materials.

Solution

To meet these requirements, a modular geocellular tank was selected.

Water Secret required a large underground storage tank and Hydro International proposed Geoplast’s Aquabox STR high quality, industrial-recycled polypropylene modules. 

Some of the benefits of this product are:

• High load resistance
• Fast and easy installation
• Ease of inspection and maintenance

The assembled tank measured roughly 35 m × 35 m in footprint and 1.5 m deep, constructed from stacked Aquabox blocks. Each Aquabox STR module is made of 100% recycled polypropylene and is rated for SLW 30 (HGV 30) traffic. The open‐cavity design yields an extremely high void ratio – about 96% of the basin volume can store water. 

Aquabox STR module has a long-term certification with long term test according with CIRIA C737 and UNI EN 17151-1 which ensure long term resistance for 50 years.

Nearly the entire tank volume holds stormwater, far more than a traditional gravel pit. In practice, the tank works by collecting runoff through inlet pipes; water then fills the module cavities. The system includes built-in access points and inspection ports, and it integrates easily with standard rainwater filters and flow-control devices.