Stormwater drainage problems can be reduced if a contractor installs a rain garden on property under development. A rain garden is a swale that has landscaping elements, such as trees, added to contain any stormwater generated within a site. The collected water slowly infiltrates into the ground. The use of exposed aggregate plays a critical role in the design and construction of rain garden. This article discusses the best site conditions that can favour the performance of a rain garden and the importance of exposed aggregate in the construction process.
The rain garden should be able to enhance the beauty of your garden. One way of ensuring this is surrounding it with exposed aggregate. This will create a clear boundary between the garden and the rest of the compound, while still giving it a beautiful finish. Exposed aggregate can also be used to make pathways within the garden to facilitate supervision and regular maintenance of the garden.
The area where you would like to locate the rain garden should have a gentle slope. Ridges and gullies should also be absent from such a location. Steep slopes, ridges and gullies accelerate the rate at which stormwater will travel on the surface. Stormwater needs to move slowly for the rain garden to do its work of cleaning it up before it is discharged into an underground aquifer. The exposed aggregate that surrounds the garden should have a gentle slope to ensure that water does not run off from the site.
Deep Water Table
Any site that is selected for a rain garden should also have a deep water table. Why is this important? Places with a high water table will quickly become waterlogged after a few episodes of heavy rain. This is because the surrounding soil will reach its saturation point quickly when compared to a location with a deep water table. It is therefore wise to search for an area whose water table is deep if you want to enjoy the full benefits of a rain garden on your property.
You should work with a stormwater drainage professional to design the most appropriate rain garden for your property. Apart from the functionality of the rain garden, they will consider the aesthetic appeal of the garden. In this case, they will guide you on the best way to incorporate exposed aggregate to the rain garden during the construction process.