When planning a new building or development, local regulations may require stormwater detention on your property. But what does that mean, and why is it necessary? Stormwater detention plays a crucial role in managing water runoff, reducing the risk of flooding, and preventing strain on local drainage systems.
Stormwater refers to rainwater that reaches the ground. While rainwater collected from rooftops is often considered clean enough for storage and reuse, it becomes stormwater once it hits driveways, roads, and other surfaces. At that point, it can pick up debris, chemicals, and pollutants as it flows into storm drains.
Stormwater detention systems are designed to temporarily hold excess rainwater and release it slowly, helping to manage runoff during heavy storms. Typically, this is done using a dedicated stormwater detention tank, which features a slow-release valve to control the water’s discharge.
There are two main options for stormwater detention:
During intense storms, rain can fall in short, heavy bursts. If stormwater is not managed properly, drainage systems can become overwhelmed, leading to flooding and water damage. While rainwater tanks can store some of this water, they fill up quickly and may not have capacity for repeated downpours.
A stormwater detention system ensures that after one downpour, water is released at a controlled rate, making room for additional rainfall. This helps prevent sudden surges of water entering drains all at once, which could otherwise lead to infrastructure damage and environmental issues.
Whether you need a stormwater detention depends on local council regulations and rainfall patterns in your area. Some councils may allow larger rainwater tanks or swimming pools to serve as alternatives, while others strictly require a dedicated detention system.
If you’re developing a property, it’s essential to check your local requirements early in the planning process. Proper stormwater management not only ensures compliance but also protects your property and the surrounding environment from excessive runoff and potential flooding.
Corrutank is a purpose-designed, modular underground tank system manufactured from twin wall HDPE pipe. Engineered for stormwater detention, retention and re-use, Corrutank provides a durable, lightweight, and space-efficient alternative to traditional concrete tanks. Each system is tailored to site-specific requirements, with custom fittings and access points. Designed to withstand load-bearing environments, Corrutank can be installed beneath roads, car parks, or landscaped areas without compromising structural performance or flow efficiency.
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