Swales and Curb Removal

By removing curbs and creating swales, water can be controlled and directed to lesson erosion and also encourage infiltration.

A swale is a slight depression that runs along the contour of the land. It can be deep or shallow, or even hidden (a ditch filled with gravel and capped with topsoil), and the dirt from digging the swale is usually used to make a berm on the downhill side. An important distinction is that a swale is not a drain. It is a water collection device. The cheapest way to store water is in the soil. And of course, by stopping the run-off, it prevents erosion as well.

How it works is this: Rain falls on your property, and instead of running straight down the slope, it runs to the swale and gathers. There it soaks in slowly.

Stones in our swales slow down the water to help reduce erosion. Plants such and moss and ferns help to absorb nutrients and water.

Our roads at Arlington Echo were once lined with wooden curbs.  Rain water would then run down the hill and go directly into a storm drain that emptied into the Severn River.  All the pollutants from the road would also go directly into the Severn River.

By removing curbing from our roads, the water can now sheet directly into the forest. This disperses the water and allows for the water to soak in. The forest floor is a great big sponge that can easily help infiltrate the water.


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Kevin M. Maxwell, Ph.D.
Superintendent of Schools

The Anne Arundel County Public School System does not discriminate on the basis of race, sex, age, national origin, religion, disability, or socioeconomic status in matters affecting employment or in providing access to programs. Questions regarding nondiscrimination should be directed to Mr. Leslie N. Stanton, Specialist in Human Relations, Anne Arundel County Public Schools, 2644 Riva Road, Annapolis, Maryland 21401
telephone 410-222-5318; (TDD) 410-222-5500.
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