If you have a stream on your property, you’ve probably noticed it doesn’t stay put. Banks shift. Water carves new paths. Soil washes away during heavy rains.
That’s normal—streams are supposed to move around. But human activity can speed things up in ways that hurt your land. New buildings, driveways, and other hard surfaces upstream mean more stormwater runoff, faster-moving water, and increased erosion on your property.
You can’t control what happens upstream. But you can protect what’s yours. And one of the best ways to do that? A riparian buffer.
What Is a Riparian Buffer?
A riparian buffer is a strip of vegetation—trees, shrubs, grasses—along the edge of a stream, river, or other water body. It’s not complicated, but it does a lot of heavy lifting.
The roots of plants in the buffer hold soil in place, stabilizing the stream bank and making it more resistant to erosion. During floods, the buffer slows water down before it tears through your property. Over time, this can reduce the damage fast-moving water does to your land.
And that’s just the beginning.
The Bigger Picture
Riparian buffers aren’t just about protecting your property—they’re good for the whole watershed (check out our upcoming events).
Plants in the buffer filter pollutants and sediment out of stormwater before it reaches the stream. Trees and shrubs create shade, cooling the water and making it a better habitat for native fish. The vegetation itself becomes a corridor for wildlife—birds, pollinators, and all kinds of creatures find food and shelter in well-planted buffers.
If you’re a farmer, the benefits are even more direct. Riparian buffers around streams can reduce topsoil loss in agricultural areas and help protect cropland from flood damage during high water events.
How to Create a Riparian Buffer
The good news: you don’t need a lot of land or a complicated plan to get started.
Choose vegetation that fits your goals. Trees and shrubs do the best job of stabilizing banks, reducing flooding, and improving aquatic habitat. Grasses are excellent at filtering sediment, nutrients, pesticides, and microbes before they reach the water. A mix of plants will give you the best results.
And whenever possible, go native. Native plants are adapted to our region and play an important role in Fayette County’s healthy ecosystem. (Keep an eye out for local native plant sales—they’re a great opportunity to stock up.)
How Big Should Your Buffer Be?
That depends on your property and how much space you’re willing to dedicate.
On larger properties, you might designate 50 feet on each side of the stream as a riparian buffer. If you’ve got a small backyard with a creek running through it, your buffer could be as simple as not mowing all the way to the water’s edge—just let the grass grow taller near the stream bank.
The bigger the buffer, the greater the impact. But even small buffers make a difference.
A Word About Permits
One important note: altering the course of a stream in Pennsylvania—including “restoring” it to how it looked before, replacing culverts, or adding rock along the banks to stabilize them—requires a permit.
Before you do any major work in or around a stream, check with the appropriate authorities. A riparian buffer, on the other hand, is something you can start on your own.
